Updated on 2026/01/09

写真a

 
KITANO MASAAKI
 
Organization
Institute of Integrated Research MDX Research Center for Element Strategy Professor
Title
Professor
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Degree

  • 博士(工学) ( 大阪府立大学 )

Research Interests

  • カーボン系固体酸触媒

  • 固体酸触媒

  • エレクトライド

  • ルイス酸

  • チタン酸ナノチューブ

  • 選択水素化

  • ハイドライド

  • アンモニア合成

  • ブレンステッド酸

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Catalyst and resource chemical process

Education

  • Osaka Prefecture University   Graduate School of Engineering

    2003.4 - 2006.3

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  • Osaka Prefecture University   Graduate School of Engineering

    2001.4 - 2003.3

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  • Osaka Prefecture University   School of Engineering   Department of Applied Chemistry

    1997.4 - 2001.3

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Research History

  • Institute of Science Tokyo   Professor

    2024.11

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  • 東京工業大学 国際先駆研究機構 元素戦略MDX研究センター   教授

    2023.1 - 2023.5

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  • 東京工業大学 国際先駆研究機構 元素戦略MDX研究センター   准教授

    2022.10 - 2022.12

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  • 東北大学 材料科学高等研究所   特任准教授

    2022.6

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  • 東京工業大学 科学技術創成研究院 フロンティア材料研究所   准教授

    2022.4 - 2022.10

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  • 南開大学 客員教授

    2019.10

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    Country:China

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  • 科学技術振興機構   戦略的創造研究推進事業個人型研究(さきがけ)研究員

    2018.10 - 2022.3

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  • Tokyo Institute of Technology   Materials Research Center for Element Strategy   Associate Professor

    2013.1 - 2022.3

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  • Tokyo Institute of Technology   Materials and Structures Laboratory

    2009.4 - 2012.12

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  • 神奈川科学技術アカデミー   常勤研究員

    2007.4 - 2009.3

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  • Osaka Prefecture University

    2006.4 - 2007.3

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Professional Memberships

Papers

  • Anion vacancies activate N2 to ammonia on Ba–Si orthosilicate oxynitride-hydride Reviewed International journal

    Zhujun Zhang, Kazuki Miyashita, Tong Wu, Jun Kujirai, Kiya Ogasawara, Jiang Li, Yihao Jiang, Masayoshi Miyazaki, Satoru Matsuishi, Masato Sasase, Tomofumi Tada, Hideo Hosono, Masaaki Kitano

    Nature Chemistry   2025.2

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1038/s41557-025-01737-8

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    Other Link: https://www.nature.com/articles/s41557-025-01737-8

  • Ammonia Synthesis over Ruthenium Supported on Metastable Perovskite Oxyhydrides BaREO2H (RE = Y, Sc) Prepared by Mechanochemical Method Reviewed International journal

    Shun Sato, Masayoshi Miyazaki, Satoru Matsuishi, Hideo Hosono, Masaaki Kitano

    Advanced Energy Materials   2402353   2024.8

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    Abstract

    Oxyhydrides have attracted attention as materials with various unique properties derived from lattice hydride ions (H). However, their instability makes synthesis by conventional thermal synthesis methods difficult, so an appropriate synthesis strategy is required. Here, the mechanochemical synthesis of perovskite oxyhydrides BaREO2H (RE = Y, Sc) for catalyst applications is reported. The formation of BaYO2H is known to be thermodynamically unstable; however, a mechanochemical process that inevitably proceeds under non‐equilibrium conditions enables the synthesis of such a metastable oxyhydride material without any heat treatment. Furthermore, BaScO2H, which is typically obtained at very high temperatures (1000 °C) and pressure (>4 GPa), is successfully synthesized at room temperature by the mechanochemical method. The ammonia synthesis reaction over these oxyhydrides supporting Ru is significantly enhanced at low temperatures, and the ammonia synthesis rates are significantly higher than conventional oxide‐supported Ru catalysts. The mechanochemically synthesized BaREO2H has many anionic electrons with low work function at the site of H vacancies, which enables strong electron donation to Ru and the storage of excess hydrogen adatoms from the Ru surface that results in high catalytic performance.

    DOI: 10.1002/aenm.202402353

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    Other Link: https://onlinelibrary.wiley.com/doi/pdf/10.1002/aenm.202402353

  • BaTiO3–xNy: Highly Basic Oxide Catalyst Exhibiting Coupling of Electrons at Oxygen Vacancies with Substituted Nitride Ions Reviewed

    Masayoshi Miyazaki, Hiroshi Saito, Kiya Ogasawara, Masaaki Kitano, Hideo Hosono

    Journal of the American Chemical Society   145 ( 48 )   25976 - 25982   2023.11

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    Authorship:Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/jacs.3c10727

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  • A 2D Ba2N Electride for Transition Metal-Free N2 Dissociation under Mild Conditions Reviewed

    Zhujun Zhang, Yihao Jiang, Jiang Li, Masayoshi Miyazaki, Masaaki Kitano, Hideo Hosono

    Journal of the American Chemical Society   145   24482 - 24485   2023.10

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    Authorship:Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/jacs.3c09362

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  • Topological insulator as an efficient catalyst for oxidative carbonylation of amines Reviewed

    Jiang Li, Jiazhen Wu, Sang-won Park, Masato Sasase, Tian-Nan Ye, Yangfan Lu, Masayoshi Miyazaki, Toshiharu Yokoyama, Tomofumi Tada, Masaaki Kitano, Hideo Hosono

    Science Advances   9 ( 38 )   eadh910   2023.9

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    Authorship:Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:American Association for the Advancement of Science (AAAS)  

    Topological materials have received much attention because of their robust topological surface states, which can be potentially applied in electronics and catalysis. Here, we show that the topological insulator bismuth selenide functions as an efficient catalyst for the oxidative carbonylation of amines with carbon monoxide and dioxygen to synthesize urea derivatives. For example, the carbonylation of butylamine can be completed over bismuth selenide nanoparticle catalyst in 4 hours at 20°C with a yield of 99%, whereas most noble metal–based catalysts do not function at such a low temperature. Density functional theory calculations further reveal that the topological surface states facilitate the activation of dioxygen through a triplet-to-singlet spin-conversion reaction, in which active oxygen species are formed with a barrier of 0.4 electron volts for the subsequent reactions with amine and carbon monoxide.

    DOI: 10.1126/sciadv.adh9104

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  • Ammonia Decomposition over Water‐Durable Hexagonal BaTiO3−xNy‐Supported Ni Catalysts Reviewed

    Kiya Ogasawara, Masayoshi Miyazaki, Kazuki Miyashita, Hitoshi Abe, Yasuhiro Niwa, Masato Sasase, Masaaki Kitano, Hideo Hosono

    Advanced Energy Materials   2023.7

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/aenm.202301286

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  • Boosted Activity of Cobalt Catalysts for Ammonia Synthesis with BaAl2O4–xHy Electrides Reviewed

    Yihao Jiang, Ryu Takashima, Takuya Nakao, Masayoshi Miyazaki, Yangfan Lu, Masato Sasase, Yasuhiro Niwa, Hitoshi Abe, Masaaki Kitano, Hideo Hosono

    Journal of the American Chemical Society   2023.4

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    Authorship:Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/jacs.3c01074

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  • Room-Temperature CO2 Hydrogenation to Methanol over Air-Stable hcp-PdMo Intermetallic Catalyst Reviewed

    Hironobu Sugiyama, Masayoshi Miyazaki, Masato Sasase, Masaaki Kitano, Hideo Hosono

    Journal of the American Chemical Society   145 ( 17 )   9410 - 9416   2023.3

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    DOI: 10.1021/jacs.2c13801

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  • Approach to Chemically Durable Nickel and Cobalt Lanthanum‐Nitride‐Based Catalysts for Ammonia Synthesis

    Yangfan Lu, Tian-Nan Ye, Jiang Li, Zichuang Li, Haotian Guan, Masato Sasase, Yasuhiro Niwa, Hitoshi Abe, Qian Li, Fushen Pan, Masaaki Kitano, Hideo Hosono

    Angewandte Chemie International Edition   2022.9

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    Authorship:Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    DOI: 10.1002/anie.202211759

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  • Hexagonal BaTiO(3–x)Hx Oxyhydride as a Water-Durable Catalyst Support for Chemoselective Hydrogenation Reviewed

    Masayoshi Miyazaki, Kiya Ogasawara, Takuya Nakao, Masato Sasase, Masaaki Kitano, Hideo Hosono

    Journal of the American Chemical Society   144 ( 14 )   6453 - 6464   2022.4

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    DOI: 10.1021/jacs.2c00976

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  • Ammonia Decomposition over CaNH-Supported Ni Catalysts via an NH2–-Vacancy-Mediated Mars–van Krevelen Mechanism Reviewed

    Kiya Ogasawara, Takuya Nakao, Kazuhisa Kishida, Tian-Nan Ye, Yangfan Lu, Hitoshi Abe, Yasuhiro Niwa, Masato Sasase, Masaaki Kitano, Hideo Hosono

    ACS Catalysis   11 ( 17 )   11005 - 11015   2021.9

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    Authorship:Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acscatal.1c01934

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  • Advances in Materials and Applications of Inorganic Electrides

    Hideo Hosono, Masaaki Kitano

    Chemical Reviews   121 ( 5 )   3121 - 3185   2021.3

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    Authorship:Last author   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acs.chemrev.0c01071

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  • Ruthenium Catalysts Promoted by Lanthanide Oxyhydrides with High Hydride-IonMobility for Low-Temperature Ammonia Synthesis Reviewed

    Kayato Ooya, Jiang Li, Keiga Fukui, Soshi Iimura, Takuya Nakao, Kiya Ogasawara, MasatoSasase, Hitoshi Abe, Yasuhiro Niwa, Masaaki Kitano, Hideo Hosono

    Adv. Energy Mater.   11   2003723   2020.12

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  • Contribution of Nitrogen Vacancies to Ammonia Synthesis over Metal Nitride Catalysts Reviewed

    Tian-Nan Ye, Sang-Won Park, Yangfan Lu, Jiang Li, Masato Sasase, Masaaki Kitano, Hideo Hosono

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   142 ( 33 )   14374 - 14383   2020.8

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/jacs.0c06624

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  • Vacancy-enabled N(2)activation for ammonia synthesis on an Ni-loaded catalyst Reviewed

    Tian-Nan Ye, Sang-Won Park, Yangfan Lu, Jiang Li, Masato Sasase, Masaaki Kitano, Tomofumi Tada, Hideo Hosono

    NATURE   583 ( 7816 )   391 - +   2020.7

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41586-020-2464-9

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  • Low-Temperature Synthesis of Perovskite Oxynitride-Hydrides as Ammonia Synthesis Catalysts Reviewed

    Masaaki Kitano, Jun Kujirai, Kiya Ogasawara, Satoru Matsuishi, TomofumiTada, Hitoshi Abe, Yasuhiro Niwa, Hideo Hosono

    J. Am. Chem. Soc.   141   20344 - 20353   2019.11

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  • Self-organized Ruthenium-Barium Core-Shell Nanoparticles on a Mesoporous Calcium Amide Matrix for Efficient Low-Temperature Ammonia Synthesis Reviewed

    Kitano, M., Inoue, Y., Sasase, M., Kishida, K., Kobayashi, Y., Nishiyama, K., Tada, T., Kawamura, S., Yokoyama, T., Hara, M., Hosono, H.

    Angewandte Chemie-International Edition   57 ( 10 )   2648 - 2652   2018

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/anie.201712398

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  • Essential role of hydride ion in ruthenium-based ammonia synthesis catalysts Reviewed

    Masaaki Kitano, Yasunori Inoue, Hiroki Ishikawa, Kyosuke Yamagata, Takuya Nakao, Tomofumi Tada, Satoru Matsuishi, Toshiharu Yokoyama, Michikazu Hara, Hideo Hosono

    CHEMICAL SCIENCE   7 ( 7 )   4036 - 4043   2016

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c6sc00767h

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  • Electronic interactions between a stable electride and a nano-alloy control the chemoselective reduction reaction Reviewed

    Tian-Nan Ye, Jiang Li, Masaaki Kitano, Masato Sasase, Hideo Hosono

    CHEMICAL SCIENCE   7 ( 9 )   5969 - 5975   2016

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c6sc01864e

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  • Mechanism Switching of Ammonia Synthesis Over Ru-Loaded Electride Catalyst at Metal-Insulator Transition Reviewed

    Shinji Kanbara, Masaaki Kitano, Yasunori Inoue, Toshiharu Yokoyama, Michikazu Hara, Hideo Hosono

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   137 ( 45 )   14517 - 14524   2015.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/jacs.5b10145

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  • Electride support boosts nitrogen dissociation over ruthenium catalyst and shifts the bottleneck in ammonia synthesis Reviewed

    Masaaki Kitano, Shinji Kanbara, Yasunori Inoue, Navaratnarajah Kuganathan, Peter V. Sushko, Toshiharu Yokoyama, Michikazu Hara, Hideo Hosono

    NATURE COMMUNICATIONS   6   2015.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/ncomms7731

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  • Protonated titanate nanotubes with Lewis and Brønsted acidity: Relationship between nanotube structure and catalytic activity Reviewed

    Masaaki Kitano, Emiko Wada, Kiyotaka Nakajima, Shigenobu Hayashi, Souichi Miyazaki, Hisayoshi Kobayashi, Michikazu Hara

    Chemistry of Materials   25 ( 3 )   385 - 393   2013.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/cm303324b

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  • Ammonia synthesis using a stable electride as an electron donor and reversible hydrogen store Reviewed

    Masaaki Kitano, Yasunori Inoue, Youhei Yamazaki, Fumitaka Hayashi, Shinji Kanbara, Satoru Matsuishi, Toshiharu Yokoyama, Sung-Wng Kim, Michikazu Hara, Hideo Hosono

    NATURE CHEMISTRY   4 ( 11 )   934 - 940   2012.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/NCHEM.1476

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  • Protonated Titanate Nanotubes as Solid Acid Catalyst Reviewed

    Masaaki Kitano, Kiyotaka Nakajima, Junko N. Kondo, Shigenobu Hayashi, Michikazu Hara

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   132 ( 19 )   6622 - +   2010.5

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    DOI: 10.1021/ja100435w

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  • Adsorption-Enhanced Hydrolysis of beta-1,4-Glucan on Graphene-Based Amorphous Carbon Bearing SO3H, COOH, and OH Groups Reviewed

    Masaaki Kitano, Daizo Yamaguchi, Satoshi Suganuma, Kiyotaka Nakajima, Hideki Kato, Shigenobu Hayashi, Michikazu Hara

    LANGMUIR   25 ( 9 )   5068 - 5075   2009.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/la8040506

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  • Preparation of nitrogen-substituted TiO2 thin film photocatalysts by the radio frequency magnetron sputtering deposition method and their photocatalytic reactivity under visible light irradiation Reviewed

    Masaaki Kitano, Keisho Funatsu, Masaya Matsuoka, Michio Ueshima, Masakazu Anpo

    JOURNAL OF PHYSICAL CHEMISTRY B   110 ( 50 )   25266 - 25272   2006.12

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    DOI: 10.1021/jp064893e

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  • Strong Phonon Scattering and Enhanced Thermoelectric Performance in SrTiO3 Polycrystals by Simultaneous Hydrogen Substitution and Oxygen Vacancy Formation Reviewed

    Xinyi He, Takehito Komatsu, Takayoshi Katase, Terumasa Tadano, Takashi Honda, Masayoshi Miyazaki, Masaaki Kitano, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya

    ACS Applied Energy Materials   8 ( 15 )   11447 - 11455   2025.7

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acsaem.5c01610

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  • Mechanochemical preparation of perovskite-type oxyhydrides BaLnO2H (Ln = Tb–Lu) and their catalytic activity for ammonia synthesis Reviewed International journal

    Shun Sato, Masayoshi Miyazaki, Hideo Hosono, Masaaki Kitano

    Dalton Transactions   54 ( 32 )   12308 - 12315   2025.7

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    Novel perovskite-type oxyhydrides, BaLnO2H (Ln = Tb–Lu), were synthesized by a mechanochemical method. These compounds functioned as efficient catalyst supports of a Ru catalyst for ammonia synthesis due to strong electron donation.

    DOI: 10.1039/d5dt01036e

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  • Mechanochemical Synthesis of H Materials: Hydrogen-Rich Perovskite Oxyhydrides with Lattice Strain as an Ammonia Synthesis Catalyst Reviewed International journal

    Fumitaka Takeiri, Norihiro Oshime, Shibghatullah Muhammady, Tasuku Uchimura, Hiroshi Yaguchi, Jun Haruyama, Akihiko Machida, Tetsu Watanuki, Takashi Saito, Kazuhiro Mori, Kenji Ohwada, Masaaki Kitano, Genki Kobayashi

    Journal of the American Chemical Society   147 ( 28 )   24482 - 24490   2025.7

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/jacs.5c04467

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  • CO2 Conversion to Methanol by Hydrogen Species on n-Type Oxide Semiconductors Reviewed

    Kazuki Fukumoto, Hideto Tsuji, Masatake Tsuji, Masakazu Koike, Kohei Takatani, Masahiko Shimizu, Masaaki Kitano, Hideo Hosono

    Journal of the American Chemical Society   147 ( 26 )   22634 - 22641   2025.6

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/jacs.5c03910

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  • Tuning the Electronic Structure of BaAl2O4–xAy with Anion Substitution for Cobalt-Loaded Ammonia Synthesis Catalysts Reviewed

    Yihao Jiang, Shiyao Wang, Masayoshi Miyazaki, Kaito Niita, Jiang Li, Hideo Hosono, Masaaki Kitano

    ACS Catalysis   10299 - 10309   2025.6

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acscatal.5c01332

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  • Origin of Room Temperature Methanol Synthesis over hcp‐PdMo Reviewed

    Feilong Xing, Ruopeng Wang, Shiyao Wang, Hironobu Sugiyama, Chenyang Zhu, Masayoshi Miyazaki, Hideo Hosono, Masaaki Kitano

    Angewandte Chemie International Edition   e202505634   2025.5

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    The hydrogenation of CO2 to methanol has garnered significant interest with respect to the reduction of carbon emissions; however, the high temperatures and pressures typically required diminish the benefits of this approach. In this study, we report a hexagonal close‐packed (hcp)‐PdMo catalyst that exhibits the highest room temperature catalytic activity for CO2 hydrogenation to methanol among reported catalysts, with 100% methanol selectivity and without any signs of deactivation. Structural analyses, which included various in situ and ex situ X‐ray techniques and infrared spectroscopy, have revealed that Mo and Pd serve as the active sites for CO2 adsorption and H2 dissociation, respectively. The CO2 hydrogenation reaction is facilitated at room temperature on the surface of the hcp‐PdMo intermetallic catalyst, where the adjacently arranged Pd and Mo sites play important roles in methanol synthesis. Mechanistic studies, combined with density functional theory (DFT) calculations, have demonstrated that the reaction proceeds via a reverse water‐gas shift and subsequent CO hydrogenation (R&C) pathway though a Pd‐assisted Mo redox mechanism at room temperature. These findings not only reveal the origin of the reaction mechanism for methanol synthesis, but also open a new direction for the design of highly efficient catalysts that function under mild conditions.

    DOI: 10.1002/anie.202505634

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  • Catalytic Ammonia Synthesis over Non-noble Metals Supported on Nitrides Reviewed

    Masaaki KITANO

    Journal of the Japan Petroleum Institute   68 ( 3 )   91 - 97   2025.5

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japan Petroleum Institute  

    DOI: 10.1627/jpi.68.91

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  • Ammonia Decomposition Catalyzed by Co Nanoparticles Encapsulated in Rare Earth Oxide Reviewed International journal

    Hiroshi Mizoguchi, Shunqin Luo, Masato Sasase, Masaaki Kitano, Hideo Hosono

    The Journal of Physical Chemistry Letters   16 ( 3 )   796 - 801   2025.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acs.jpclett.4c03309

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  • Effects of nitrogen vacancy sites of oxynitride support on the catalytic activity for ammonia decomposition Reviewed International journal

    Kazuki Miyashita, Kiya Ogasawara, Masayoshi Miyazaki, Hitoshi Abe, Yasuhiro Niwa, Hideki Kato, Hideo Hosono, Masaaki Kitano

    NPG Asia Materials   2024.10

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    DOI: 10.1038/s41427-024-00572-6

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  • Propane dehydrogenation catalysis of group IIIB and IVB metal hydrides Reviewed International journal

    Xiaoming Hu, Mengwen Huang, Tetsuya Kinjyo, Shinya Mine, Takashi Toyao, Yoyo Hinuma, Masaaki Kitano, Toyoto Sato, Norikazu Namiki, Ken-ichi Shimizu, Zen Maeno

    RSC Advances   14 ( 32 )   23459 - 23465   2024.7

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    PDH reactions using group IIIB and IVB metal hydride catalysts were investigated under relatively low-temperature conditions of 450 °C. Lanthanum hydride exhibited the lowest activation energy for dehydrogenation and the highest propylene yield.

    DOI: 10.1039/d4ra02473g

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  • Discovery of Self‐Assembled 2D Ru/Si Superlattices Boosting Hydrogen Evolution Reviewed International coauthorship International journal

    Weizheng Cai, Xinyi He, Tian‐Nan Ye, Xinmeng Hu, Chuanlong Liu, Masato Sasase, Masaaki Kitano, Toshio Kamiya, Hideo Hosono, Jiazhen Wu

    Small   2402357   2024.6

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    Abstract

    2D heterostructuring is a versatile methodology for designing nanoarchitecture catalytic systems that allow for reconstruction and modulation of interfaces and electronic structures. However, catalysts with such structures are extremely scarce due to limited synthetic strategies. Here, a highly ordered 2D Ru/Si/Ru/Si… nano‐heterostructures (RSHS) is reported by acid etching of the LaRuSi electride. RSHS shows a superior electrocatalytic activity for hydrogen evolution with an overpotential of 14 mV at 10 mA cm−2 in alkaline media. Both experimental analyses and first‐principles calculations demonstrate that the electronic states of Ru can be tuned by strong interactions of the interfacial Ru–Si, leading to an optimized hydrogen adsorption energy. Moreover, due to the synergistic effect of Ru and Si, the energy barrier of water dissociation is significantly reduced. The well‐organized superlattice structure will provide a paradigm for construction of efficient catalysts with tunable electronic states and dual active sites.

    DOI: 10.1002/smll.202402357

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  • Ammonia decomposition mediated at nitrogen vacancies on NaCl-type binary metal nitrides supporting transition metal nanoparticles Reviewed International journal

    Masayoshi Miyazaki, Kiya Ogasawara, Yousuke Takekoshi, Kazuki Miyashita, Hitoshi Abe, Yasuhiro Niwa, Hideo Hosono, Masaaki Kitano

    Chemical Communications   60 ( 50 )   6447 - 6450   2024.6

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    Nitrogen vacancies formed on NaCl-type binary transition metal nitrides and ammonia decomposition activity employing nitrides as supports can be understood in terms of the ionic radii of the metal cations.

    DOI: 10.1039/d4cc02250e

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  • CN22– Vacancies Enhance Ammonia Synthesis over Air-Durable Alkaline Earth Metal Cyanamide-Supported Cobalt Catalysts Reviewed International journal

    Yihao Jiang, Masayoshi Miyazaki, Kazuki Miyashita, Masato Sasase, Kazuhisa Kishida, Hideo Hosono, Masaaki Kitano

    ACS Catalysis   14 ( 8 )   6349 - 6357   2024.4

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acscatal.4c00830

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  • CeNix Alloys as Catalysts for Ammonia Synthesis: Insights on Ni–CeN Surface Layer Formation and Its Impact Reviewed

    Javier Arroyo-Caire, Yihao Jiang, Manuel Antonio Diaz-Perez, Mayra Anabel Lara-Angulo, Masayoshi Miyazaki, Juan Carlos Serrano-Ruiz, Masaaki Kitano, Hideo Hosono

    ACS Catalysis   13   15715 - 15724   2023.11

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    DOI: 10.1021/acscatal.3c03654

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  • Ammonia Cracking Catalyzed by Ni Nanoparticles Confined in the Framework of CeO2 Support

    Hiroshi Mizoguchi, Yuta Osawa, Masato Sasase, Naoki Ohashi, Masaaki Kitano, Hideo Hosono

    The Journal of Physical Chemistry Letters   9516 - 9520   2023.10

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    DOI: 10.1021/acs.jpclett.3c02446

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  • Barium Oxynitride Electride as Highly Enhanced Promotor for Ruthenium Catalyst in Ammonia Synthesis: Comparative Study with Barium Oxide Reviewed

    Jiang Li, Yihao Jiang, Zhujun Zhang, Masatake Tsuji, Masayoshi Miyazaki, Masaaki Kitano, Hideo Hosono

    Advanced Energy Materials   13 ( 45 )   2302424   2023.10

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    Abstract

    Barium oxide is a conventional promoter for various transition‐metal (TM) catalysts in ammonia synthesis. Ba‐promoted Ru catalysts are widely used for ammonia synthesis under mild reaction conditions. However, the promotion mechanism, including the active factor, remains unclear. In this study, the excellent promotion effect of barium oxynitride is reported, which creates anionic electrons in the lattice, forming an electride (BaOxNy:ez) with the same rocksalt structure as BaO. The BaOxNy:ez enhances the ammonia synthesis activity of the supported Ru catalyst by 40–100 fold compared with the BaO promotor. This study reveals that a low‐work‐function electron formed in the BaO lattice plays a pivotal role in the electronic promotion effect in catalytic ammonia synthesis, suggesting that BaOxNy:ez formed near the surface during the ammonia synthesis reaction is an active species for the promotion effect of conventional BaO.

    DOI: 10.1002/aenm.202302424

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    Other Link: https://onlinelibrary.wiley.com/doi/pdf/10.1002/aenm.202302424

  • Multiple reaction pathway on alkaline earth imide supported catalysts for efficient ammonia synthesis Reviewed

    Zichuang Li, Yangfan Lu, Jiang Li, Miao Xu, Yanpeng Qi, Sang-Won Park, Masaaki Kitano, Hideo Hosono, Jie-Sheng Chen, Tian-Nan Ye

    Nature Communications   14 ( 1 )   6373   2023.10

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    Abstract

    The tunability of reaction pathways is required for exploring efficient and low cost catalysts for ammonia synthesis. There is an obstacle by the limitations arising from scaling relation for this purpose. Here, we demonstrate that the alkali earth imides (AeNH) combined with transition metal (TM = Fe, Co and Ni) catalysts can overcome this difficulty by utilizing functionalities arising from concerted role of active defects on the support surface and loaded transition metals. These catalysts enable ammonia production through multiple reaction pathways. The reaction rate of Co/SrNH is as high as 1686.7 mmol·gCo−1·h−1 and the TOFs reaches above 500 h−1 at 400 °C and 0.9 MPa, outperforming other reported Co-based catalysts as well as the benchmark Cs-Ru/MgO catalyst and industrial wüstite-based Fe catalyst under the same reaction conditions. Experimental and theoretical results show that the synergistic effect of nitrogen affinity of 3d TMs and in-situ formed NH2− vacancy of alkali earth imides regulate the reaction pathways of the ammonia production, resulting in distinct catalytic performance different from 3d TMs. It was thus demonstrated that the appropriate combination of metal and support is essential for controlling the reaction pathway and realizing highly active and low cost catalysts for ammonia synthesis.

    DOI: 10.1038/s41467-023-42050-7

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    Other Link: https://www.nature.com/articles/s41467-023-42050-7

  • Propane metathesis and hydrogenolysis over titanium hydride catalysts Reviewed

    Mengwen Huang, Yosuke Tomimuro, Shinta Miyazaki, Shinya Mine, Takashi Toyao, Yoyo Hinuma, Yasuharu Kanda, Masaaki Kitano, Ken-ichi Shimizu, Zen Maeno

    Catalysis Science & Technology   13 ( 21 )   6247 - 6253   2023.9

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    Propane metathesis reactions over group 2–5 metal hydrides were investigated where TiH2 exhibited the highest butane formation amount. This study is the first example of carbon–carbon bond cleavage and formation over bulk metal hydrides.

    DOI: 10.1039/d3cy01187a

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  • Ammonia Synthesis over Fe‐Supported Catalysts Mediated by Face‐Sharing Nitrogen Sites in BaTiO3−xNy Oxynitride Reviewed

    Masayoshi Miyazaki, Keisuke Ikejima, Kiya Ogasawara, Masaaki Kitano, Hideo Hosono

    ChemSusChem   e202300551   2023.5

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    DOI: 10.1002/cssc.202300551

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  • Quasi-Two-Dimensional Intermetallic Electride CeRuSi for Efficient Alkaline Hydrogen Evolution Reviewed

    Weizheng Cai, Chuan Zhou, Xinmeng Hu, Tiwen Jiao, Yijia Liu, Lei Li, Jiang Li, Masaaki Kitano, Hideo Hosono, Jiazhen Wu

    ACS Catalysis   13 ( 7 )   4752 - 4759   2023.3

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    DOI: 10.1021/acscatal.2c06382

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  • Electronic Promotion of Methanol Synthesis over Cu-Loaded ZnO-Based Catalysts Reviewed

    Hironobu Sugiyama, Nobuhiro Nakamura, Satoru Watanabe, Junghwan Kim, Masaaki Kitano, Hideo Hosono

    The Journal of Physical Chemistry Letters   14 ( 5 )   1259 - 1264   2023.1

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    DOI: 10.1021/acs.jpclett.2c03427

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  • Encapsulated C12A7 electride material enables a multistep electron transfer process for cross-coupling reactions Reviewed

    Bo Dai, Zichuang Li, Miao Xu, Jiang Li, Yangfan Lu, Jiantao Zai, Liuyin Fan, Sang-Won Park, Masato Sasase, Masaaki Kitano, Hideo Hosono, Xin-Hao Li, Tian-Nan Ye, Jie-Sheng Chen

    Journal of Materials Chemistry A   11 ( 24 )   12802 - 12810   2023.1

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    A multistep electron transfer process is realized over C12A7:e electride composite material. The graphene promotes electron transfer from C12A7:e through surface Pd to the aryl halide substrates, affording a series of cross-coupling reactions.

    DOI: 10.1039/d2ta08899a

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  • Highly reactive methyl group drives selective catalytic reduction of NOx by methanol on bismuth oxide nanoparticle implanted FER zeolite Reviewed

    Han Sun, Fei Han, Lu Sun, Shinya Mine, Takashi Toyao, Yunpeng Liu, Zhonghua Wu, Masaaki Kitano, Masaya Matsuoka, Weiwei Liu, Yongqiang Dai, Meiqing Shen, Haijun Chen

    Applied Catalysis B: Environmental   318   121883 - 121883   2022.12

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    DOI: 10.1016/j.apcatb.2022.121883

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  • Low-Temperature Methanol Synthesis by a Cu-Loaded LaH2+x Electride

    Hironobu Sugiyama, Takuya Nakao, Masayoshi Miyazaki, Hitoshi Abe, Yasuhiro Niwa, Masaaki Kitano, Hideo Hosono

    ACS Catalysis   12572 - 12581   2022.10

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    DOI: 10.1021/acscatal.2c03662

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  • Unique Catalytic Mechanism for Ru-Loaded Ternary Intermetallic Electrides for Ammonia Synthesis

    Yutong Gong, Hongchen Li, Jiazhen Wu, Xingyi Song, Xueqing Yang, Xiaobing Bao, Xiao Han, Masaaki Kitano, Junjie Wang, Hideo Hosono

    Journal of the American Chemical Society   144 ( 19 )   8683 - 8692   2022.5

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    DOI: 10.1021/jacs.2c01899

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  • Selective Catalytic Reduction of NOx by Methanol on Metal-Free Zeolite with Brønsted and Lewis Acid Pair

    Fei Han, Han Sun, Zhenchao Zhao, Yaxin Xu, Hong Dong, Weiwei Liu, Lu Sun, Zhili Wang, Guangjin Hou, Masaaki Kitano, Wei Li, Meiqing Shen, Haijun Chen

    ACS Catalysis   12 ( 4 )   2403 - 2414   2022.2

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    DOI: 10.1021/acscatal.1c05624

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  • Comment on Weber et al. Mayenite-Based Electride C12A7e−: A Reactivity and Stability Study. Catalysts 2021, 11, 334

    Yasunori Inoue, Masaaki Kitano, Hideo Hosono

    Catalysts   11 ( 10 )   1154 - 1154   2021.9

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    In 2012, we reported that C12A7 electride (C12A7: e−) significantly promotes the catalytic activity of Ru nanoparticles for ammonia synthesis through the electron donation from the C12A7: e− with a low work function (2.4 eV) to Ru [...]

    DOI: 10.3390/catal11101154

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  • Dissociative and Associative Concerted Mechanism for Ammonia Synthesis over Co-Based Catalyst

    Tian-Nan Ye, Sang-Won Park, Yangfan Lu, Jiang Li, Jiazhen Wu, Masato Sasase, Masaaki Kitano, Hideo Hosono

    Journal of the American Chemical Society   143 ( 32 )   12857 - 12866   2021.8

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    DOI: 10.1021/jacs.1c06657

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  • C2 Vacancy-Mediated N2 Activation over Ni-Loaded Rare-Earth Dicarbides for Ammonia Synthesis

    Yiliguma, Sang-Won Park, Jiang Li, Masato Sasase, Masaaki Kitano, Hideo Hosono

    ACS Catalysis   11 ( 12 )   7595 - 7603   2021.6

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    DOI: 10.1021/acscatal.1c01646

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  • Ship-in-a-Bottle Synthesis of High Concentration of N2 Molecules in a Cage-Structured Electride Reviewed

    Takuya Nakao, Kiya Ogasawara, Masaaki Kitano, Satoru Matsuishi, Peter V. Sushko, Hideo Hosono

    The Journal of Physical Chemistry Letters   12   1295 - 1299   2021.1

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    DOI: 10.1021/acs.jpclett.0c03800

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  • Why Ca2NH works as an efficient and stable support of Ru catalyst in ammonia synthesis Reviewed

    Masaaki Kitano, Kyosuke Yamagata, Hideo Hosono

    Res. Chem. Intermed.   47   235 - 248   2021.1

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  • Intermetallic ZrPd3-Embedded Nanoporous ZrC as an Efficient and Stable Catalyst of the Suzuki Cross-Coupling Reaction

    Yangfan Lu, Tian-Nan Ye, Sang-Won Park, Jiang Li, Masato Sasase, Hitoshi Abe, Yasuhiro Niwa, Masaaki Kitano, Hideo Hosono

    ACS Catalysis   14366 - 14374   2020.12

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    DOI: 10.1021/acscatal.0c03416

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  • Efficient Ammonia Synthesis over Phase-Separated Nickel-Based Intermetallic Catalysts Reviewed

    Tian-Nan Ye, Yangfan Lu, Yasukazu Kobayashi, Jiang Li, Sang-Won Park, Masato Sasase, Masaaki Kitano, Hideo Hosono

    JOURNAL OF PHYSICAL CHEMISTRY C   124 ( 52 )   28589 - 28595   2020.12

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    DOI: 10.1021/acs.jpcc.0c09590

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  • Stable single platinum atoms trapped in sub-nanometer cavities in 12CaO·7Al2O3 for chemoselective hydrogenation of nitroarenes Reviewed

    Tian-Nan Ye, Zewen Xiao, Jiang Li, Yutong Gong, Hitoshi Abe, Yasuhiro Niwa, Masato Sasase, Masaaki Kitano, Hideo Hosono

    Nature Communications   11 ( 1 )   1020   2020.12

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    DOI: 10.1038/s41467-019-14216-9

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    Other Link: http://www.nature.com/articles/s41467-019-14216-9

  • Air-Stable Calcium Cyanamide-Supported Ruthenium Catalyst for Ammonia Synthesis and Decomposition Reviewed

    Kazuhisa Kishida, Masaaki Kitano, Masato Sasase, Peter V. Sushko, Hitoshi Abe, Yasuhiro Niwa, Kiya Ogasawara, Toshiharu Yokoyama, Hideo Hosono, Masaaki Kitano, Hideo Hosono

    ACS Applied Energy Materials   3 ( 7 )   6573 - 6582   2020.7

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    DOI: 10.1021/acsaem.0c00754

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  • Palladium-bearing intermetallic electride as an efficient and stable catalyst for Suzuki cross-coupling reactions Reviewed

    Ye Tian-Nan, Lu Yangfan, Xiao Zewen, Li Jiang, Nakao Takuya, Abe Hitoshi, Niwa Yasuhiro, Kitano Masaaki, Tada Tomofumi, Hosono Hideo

    NATURE COMMUNICATIONS   10 ( 1 )   2019.12

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    DOI: 10.1038/s41467-019-13679-0

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    Other Link: http://www.nature.com/articles/s41467-019-13679-0

  • Acid-durable electride with layered ruthenium for ammonia synthesis: boosting the activity via selective etching Reviewed

    Li Jiang, Wu Jiazhen, Wang Haiyun, Lu Yangfan, Ye Tiannan, Sasase Masato, Wu Xiaojun, Kitano Masaaki, Inoshita Takeshi, Hosono Hideo

    CHEMICAL SCIENCE   10 ( 22 )   5712 - 5718   2019.6

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    DOI: 10.1039/c9sc01539f

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  • Direct Activation of Cobalt Catalyst by 12CaO center dot 7Al(2)O(3) Electride for Ammonia Synthesis Reviewed

    Inoue Yasunori, Kitano Masaaki, Tokunari Mai, Taniguchi Teppei, Ooya Kayato, Abe Hitoshi, Niwa Yasuhiro, Sasase Masato, Hara Michikazu, Hosono Hideo

    ACS CATALYSIS   9 ( 3 )   1670 - 1679   2019.3

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    DOI: 10.1021/acscatal.8b03650

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  • Zeolitic Intermetallics: LnNiSi (Ln = La-Nd) Reviewed

    Mizoguchi Hiroshi, Park Sang-Won, Kishida Kazuhisa, Kitano Masaaki, Kim Junghwan, Sasase Masato, Honda Takashi, Ikeda Kazutaka, Otomo Toshiya, Hosono Hideo

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   141 ( 8 )   3376 - 3379   2019.2

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    DOI: 10.1021/jacs.8b12784

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  • Pseudogap Control of Physical and Chemical Properties in CeFeSi-Type Intermetallics Reviewed

    Wu Jiazhen, Lu Erdong, Li Jiang, Lu Yangfan, Kitano Masaaki, Fredrickson Daniel C, Inoshita Takeshi, Hosono Hideo

    INORGANIC CHEMISTRY   58 ( 4 )   2848 - 2855   2019.2

  • Intermetallic Electride Catalyst as a Platform for Ammonia Synthesis Reviewed

    Wu Jiazhen, Li Jiang, Gong Yutong, Kitano Masaaki, Inoshita Takeshi, Hosono Hideo

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   58 ( 3 )   825 - 829   2019.1

  • Enhanced Catalytic Ammonia Synthesis with Transformed BaO Reviewed

    Hattori Masashi, Mori Taiyo, Arai Tomohiro, Inoue Yasunori, Sasase Masato, Tada Tomofumi, Kitano Masaaki, Yokoyama Toshiharu, Hara Michikazu, Hosono Hideo

    ACS CATALYSIS   8 ( 12 )   10977 - 10984   2018.12

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    DOI: 10.1021/acscatal.8b02839

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  • Synthesis of Rare-Earth-Based Metallic Electride Nanoparticles and Their Catalytic Applications to Selective Hydrogenation and Ammonia Synthesis Reviewed

    Lu Yangfan, Li Jiang, Ye Tian-Nan, Kobayashi Yasukazu, Sasase Masato, Kitano Masaaki, Hosono Hideo

    ACS CATALYSIS   8 ( 12 )   11054 - 11058   2018.12

  • High-Mobility p-Type and n-Type Copper Nitride Semiconductors by Direct Nitriding Synthesis and In Silico Doping Design Reviewed

    Matsuzaki Kosuke, Harada Kou, Kumagai Yu, Koshiya Shogo, Kimoto Koji, Ueda Shigenori, Sasase Masato, Maeda Akihiro, Susaki Tomofumi, Kitano Masaaki, Oba Fumiyasu, Hosono Hideo

    ADVANCED MATERIALS   30 ( 31 )   2018.8

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    DOI: 10.1002/adma.201801968

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  • Topotactic Synthesis of Mesoporous 12CaO center dot 7Al(2)O(3) Mesocrystalline Microcubes toward Catalytic Ammonia Synthesis Reviewed

    Hasegawa, G., Moriya, S., Inada, M., Kitano, M., Okunaka, M., Yamamoto, T., Matsukawa, Y., Nishimi, K., Shima, K., Enomoto, N., Matsuishi, S., Hosono, H., Hayashi, K.

    Chemistry of Materials   30 ( 14 )   4498 - 4502   2018

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    DOI: 10.1021/acs.chemmater.8b01819

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  • High Electron Density on Ru in Intermetallic YRu2: The Application to Catalyst for Ammonia Synthesis Reviewed

    Ogawa, T., Kobayashi, Y., Mizoguchi, H., Kitano, M., Abe, H., Tada, T., Toda, Y., Niwa, Y., Hosono, H.

    Journal of Physical Chemistry C   122 ( 19 )   10468 - 10475   2018

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    DOI: 10.1021/acs.jpcc.8b02128

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  • Ternary intermetallic LaCoSi as a catalyst for N-2 activation Reviewed

    Gong, Y. T., Wu, J. Z., Kitano, M., Wang, J. J., Ye, T. N., Li, J., Kobayashi, Y., Kishida, K., Abe, H., Niwa, Y., Yang, H. S., Tada, T., Hosono, H.

    Nature Catalysis   1 ( 3 )   178 - 185   2018

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    DOI: 10.1038/s41929-017-0022-0

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  • A high performance catalyst of shape-specific ruthenium nanoparticles for production of primary amines by reductive amination of carbonyl compounds Reviewed

    Chandra, D., Inoue, Y., Sasase, M., Kitano, M., Bhaumik, A., Kamata, K., Hosono, H., Hara, M.

    Chemical Science   9 ( 27 )   5949 - 5956   2018

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    DOI: 10.1039/c8sc01197d

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  • Large Oblate Hemispheroidal Ruthenium Particles Supported on Calcium Amide as Efficient Catalysts for Ammonia Decomposition Reviewed

    Kishida, K., Kitano, M., Inoue, Y., Sasase, M., Nakao, T., Tada, T., Abe, H., Niwa, Y., Yokoyama, T., Hara, M., Hosono, H.

    Chemistry-a European Journal   24 ( 31 )   7976 - 7984   2018

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    DOI: 10.1002/chem.201800467

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  • Control of nitrogen activation ability by Co-Mo bimetallic nanoparticle catalysts prepared via sodium naphthalenide-reduction Reviewed

    Tsuji, Y., Ogasawara, K., Kitano, M., Kishida, K., Abe, H., Niwa, Y., Yokoyama, T., Hara, M., Hosono, H.

    Journal of Catalysis   364   31 - 39   2018

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    DOI: 10.1016/j.jcat.2018.04.029

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  • Kinetic evidence: the rate-determining step for ammonia synthesis over electride-supported Ru catalysts is no longer the nitrogen dissociation step Reviewed

    Kobayashi, Y., Kitano, M., Kawamura, S., Yokoyama, T., Hosono, H.

    Catalysis Science & Technology   7 ( 1 )   47 - 50   2017

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    DOI: 10.1039/c6cy01962e

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  • Chlorine-Tolerant Ruthenium Catalyst Derived Using the Unique Anion-Exchange Properties of 12CaO center dot 7Al(2)O(3) for Ammonia Synthesis Reviewed

    Li, J., Kitano, M., Ye, T. N., Sasase, M., Yokoyama, T., Hosono, H.

    Chemcatchem   9 ( 15 )   3078 - 3083   2017

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    DOI: 10.1002/cctc.201700353

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  • Oxidation Number Estimation of Ca in Ca-N Compounds from Ca K-edge XANES Spectra Reviewed

    Abe, H., Niwa, Y., Kitano, M., Inoue, Y., Yokoyama, T., Hara, M., Hosono, H.

    Bulletin of the Chemical Society of Japan   90 ( 8 )   963 - 965   2017

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    DOI: 10.1246/bcsj.20170143

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  • Anchoring Bond between Ru and N Atoms of Ru/Ca2NH Catalyst: Crucial for the High Ammonia Synthesis Activity Reviewed

    Abe, H., Niwa, Y., Kitano, M., Inoue, Y., Sasase, M., Nakao, T., Tada, T., Yokoyama, T., Hara, M., Hosono, H.

    Journal of Physical Chemistry C   121 ( 38 )   20900 - 20904   2017

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    DOI: 10.1021/acs.jpcc.7b07268

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  • Tiered Electron Anions in Multiple Voids of LaScSi and Their Applications to Ammonia Synthesis Reviewed

    Wu, J. Z., Gong, Y. T., Inoshita, T., Fredrickson, D. C., Wang, J. J., Lu, Y. F., Kitano, M., Hosono, H.

    Advanced Materials   29 ( 36 )   2017

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    DOI: 10.1002/adma.201700924

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  • Decomposition of Gas-Phase Organic Pollutants over Nanocrystalline Tungsten Oxide Photocatalysts under Visible-Light Irradiation Reviewed

    Fukushi, D., Sato, A., Yoshida, K., Kitano, M.

    Bulletin of the Chemical Society of Japan   90 ( 8 )   885 - 892   2017

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    DOI: 10.1246/bcsj.20170006

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  • Acid Properties of Protonated Titanate Nanotubes Reviewed

    Kitano, M., Kobayashi, H., Hayashi, S., Hara, M.

    Journal of the Japan Petroleum Institute   60 ( 3 )   113 - 120   2017

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    DOI: 10.1627/jpi.60.113

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  • Effect of oxygen vacancy in tungsten oxide on the photocatalytic activity for decomposition of organic materials in the gas phase Reviewed

    Fukushi, D., Sasaki, A., Hirabayashi, H., Kitano, M.

    Microelectronics Reliability   79   1 - 4   2017

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    DOI: 10.1016/j.microrel.2017.09.025

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  • Copper-Based Intermetallic Electride Catalyst for Chemoselective Hydrogenation Reactions Reviewed

    Ye, T. N., Lu, Y. F., Li, J., Nakao, T., Yang, H. S., Tada, T., Kitano, M., Hosono, H.

    Journal of the American Chemical Society   139 ( 47 )   17089 - 17097   2017

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    DOI: 10.1021/jacs.7b08252

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  • Ru-Loaded C12A7:e(-) Electride as a Catalyst for Ammonia Synthesis Reviewed

    Hara, M., Kitano, M., Hosono, H.

    Acs Catalysis   7 ( 4 )   2313 - 2324   2017

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    DOI: 10.1021/acscatal.6b03357

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  • Unique nanocages of 12CaO center dot 7Al(2)O(3) boost heterolytic hydrogen activation and selective hydrogenation of heteroarenes over ruthenium catalyst Reviewed

    Ye, T. N., Li, J., Kitano, M., Hosono, H.

    Green Chemistry   19 ( 3 )   749 - 756   2017

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    DOI: 10.1039/c6gc02782b

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  • Pulverization of oxide powders utilizing thermal treatment in ammonia-based atmosphere Reviewed

    Alfian Noviyanto, Toshiyuki Nishimura, Masaaki Kitano, Naoki Ohashi

    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY   36 ( 16 )   4083 - 4088   2016.12

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    DOI: 10.1016/j.jeurceramsoc.2016.06.031

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  • Efficient and Stable Ammonia Synthesis by Self-Organized Flat Ru Nanoparticles on Calcium Amide Reviewed

    Yasunori Inoue, Masaaki Kitano, Kazuhisa Kishida, Hitoshi Abe, Yasuhiro Niwa, Masato Sasase, Yusuke Fujita, Hiroki Ishikawa, Toshiharu Yokoyama, Michikazu Hara, Hideo Hosono

    ACS CATALYSIS   6 ( 11 )   7577 - 7584   2016.11

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    DOI: 10.1021/acscatal.6b01940

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  • The Key Indicator for the Control of Metal Particle Sizes on Supports from First-Principles and Experimental Observation Reviewed

    Takuya Nakao, Tornofumi Tada, Masaaki Kitano, Masato Sasase, Hideo Hosono

    JOURNAL OF PHYSICAL CHEMISTRY C   120 ( 38 )   21879 - 21887   2016.9

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  • Hydride-Based Electride Material, LnH(2) (Ln = La, Ce, or Y) Reviewed

    Hiroshi Mizoguchi, Masaaki Okunaka, Masaaki Kitano, Satoru Matsuishi, Toshiharu Yokoyama, Hideo Hosono

    INORGANIC CHEMISTRY   55 ( 17 )   8833 - 8838   2016.9

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  • High Oxidation Tolerance of Ru Nanoparticles on 12CaO center dot 7Al(2)O(3) Electride Reviewed

    Hitoshi Abe, Yasuhiro Niwa, Masaaki Kitano, Yasunori Inoue, Youichi Murakami, Toshiharu Yokoyama, Michikazu Hara, Hideo Hosono

    JOURNAL OF PHYSICAL CHEMISTRY C   120 ( 16 )   8711 - 8716   2016.4

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  • Water Durable Electride Y5Si3: Electronic Structure and Catalytic Activity for Ammonia Synthesis Reviewed

    Yangfan Lu, Jiang Li, Tomofumi Tada, Yoshitake Toda, Shigenori Ueda, Toshiharu Yokoyama, Masaaki Kitano, Hideo Hosono

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   138 ( 12 )   3970 - 3973   2016.3

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    DOI: 10.1021/jacs.6b00124

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  • Essential role of hydride ion in ruthenium-based ammonia synthesis catalysts (vol 7, pg 4036, 2016) Reviewed

    Masaaki Kitano, Yasunori Inoue, Hiroki Ishikawa, Kyosuke Yamagata, Takuya Nakao, Tomofumi Tada, Satoru Matsuishi, Toshiharu Yokoyama, Michikazu Hara, Hideo Hosono

    CHEMICAL SCIENCE   7 ( 8 )   5596 - 5596   2016

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  • Ammonia synthesis over Co-Mo alloy nanoparticle catalyst prepared via sodium naphthalenide-driven reduction Reviewed

    Tsuji, Y., Kitano, M., Kishida, K., Sasase, M., Yokoyama, T., Hara, M., Hosono, H.

    Chemical Communications   52 ( 100 )   14369 - 14372   2016

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  • A Combined Catalyst of Pt Nanoparticles and TiO2 with Water-Tolerant Lewis Acid Sites for One-Pot Conversion of Glycerol to Lactic Acid Reviewed

    Komanoya, T., Suzuki, A., Nakajima, K., Kitano, M., Kamata, K., Hara, M.

    Chemcatchem   8 ( 6 )   1094 - 1099   2016

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  • Synthesis of niobium-doped titanate nanotubes as solid acid catalysts Reviewed

    Emiko Wada, Masaaki Kitano, Kazuto Yamamoto, Kiyotaka Nakajima, Shigenobu Hayashi, Michikazu Hara

    CATALYSIS SCIENCE & TECHNOLOGY   6 ( 13 )   4832 - 4839   2016

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  • Transesterification of Triolein over Hydrophobic Microporous Carbon with SO3H Groups Reviewed

    Kiichi Fukuhara, Kiyotaka Nakajima, Masaaki Kitano, Shigenobu Hayashi, Michikazu Hara

    CHEMCATCHEM   7 ( 23 )   3945 - 3950   2015.12

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    DOI: 10.1002/cctc.201500525

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  • Synergistic Catalysis by Lewis Acid and Base Sites on ZrO2 for Meerwein-Ponndorf-Verley Reduction Reviewed

    Tasuku Komanoya, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

    JOURNAL OF PHYSICAL CHEMISTRY C   119 ( 47 )   26540 - 26546   2015.11

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  • Formation of 5-(Hydroxymethyl)furfural by Stepwise Dehydration over TiO2 with Water-Tolerant Lewis Acid Sites Reviewed

    Ryouhei Noma, Kiyotaka Nakajima, Keigo Kamata, Masaaki Kitano, Shigenobu Hayashi, Michikazu Hara

    JOURNAL OF PHYSICAL CHEMISTRY C   119 ( 30 )   17117 - 17125   2015.7

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    DOI: 10.1021/acs.jpcc.5b03290

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  • Electron Donation Enhanced CO Oxidation over Ru-Loaded 12CaO center dot 7Al(2)O(3) Electride Catalyst Reviewed

    Md Jafar Sharif, Masaaki Kitano, Yasunori Inoue, Yasuhiro Niwa, Hitoshi Abe, Toshiharu Yokoyama, Michikazu Hara, Hideo Hosono

    JOURNAL OF PHYSICAL CHEMISTRY C   119 ( 21 )   11725 - 11731   2015.5

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    DOI: 10.1021/acs.jpcc.5b02342

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  • Efficient Mukaiyama aldol reaction in water with TiO4 tetrahedra on a hydrophobic mesoporous silica surface Reviewed

    Hiroshi Shintaku, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

    CHEMICAL COMMUNICATIONS   50 ( 88 )   13473 - 13476   2014.11

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    DOI: 10.1039/c4cc05711b

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  • NH2- Dianion Entrapped in a Nanoporous 12CaO center dot 7Al(2)O(3) Crystal by Ammonothermal Treatment: Reaction Pathways, Dynamics, and Chemical Stability Reviewed

    Fumitaka Hayashi, Yudai Tomota, Masaaki Kitano, Yoshitake Toda, Toshiharu Yokoyama, Hideo Hosono

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   136 ( 33 )   11698 - 11706   2014.8

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    DOI: 10.1021/ja504185m

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  • Selective glucose transformation by titania as a heterogeneous Lewis acid catalyst Reviewed

    Kiyotaka Nakajima, Ryouhei Noma, Masaaki Kitano, Michikazu Hara

    JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL   388   100 - 105   2014.7

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    DOI: 10.1016/j.molcata.2013.09.012

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  • Slow Reactant-Water Exchange and High Catalytic Performance of Water-Tolerant Lewis Acids Reviewed

    Yusuke Koito, Kiyotaka Nakajima, Hisayoshi Kobayashi, Ryota Hasegawa, Masaaki Kitano, Michikazu Hara

    CHEMISTRY-A EUROPEAN JOURNAL   20 ( 26 )   8068 - 8075   2014.6

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    DOI: 10.1002/chem.201400240

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  • Surface Treatment for Conductive 12CaO center dot 7Al(2)O(3) Electride Powder by Rapid Thermal Annealing Processing and Its Application to Ammonia Synthesis Reviewed

    Fumitaka Hayashi, Masaaki Kitano, Toshiharu Yokoyama, Michikazu Hara, Hideo Hosono

    CHEMCATCHEM   6 ( 5 )   1317 - 1323   2014.5

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    DOI: 10.1002/cctc.201301061

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  • Lewis acid properties of some metal salts for lactic acid formation in water: P-31 NMR spectroscopy with trimethylphosphine oxide as a molecular probe Reviewed

    Yusuke Koito, Kiyotaka Nakajima, Ryota Hasegawa, Hisayoshi Kobayashi, Masaaki Kitano, Michikazu Hara

    CATALYSIS TODAY   226   198 - 203   2014.5

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    DOI: 10.1016/j.cattod.2013.10.071

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  • Lewis Acid Catalysis of TiO4 Tetrahedra on Mesoporous Silica in Water Reviewed

    Hiroshi Shintaku, Kiyotaka Nakajima, Masaaki Kitano, Nobuyuki Ichikuni, Michikazu Hara

    ACS CATALYSIS   4 ( 4 )   1198 - 1204   2014.4

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    DOI: 10.1021/cs401149n

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  • Highly Dispersed Ru on Electride [Ca24Al28O64](4+)(e(-))(4) as a Catalyst for Ammonia Synthesis Reviewed

    Yasunori Inoue, Masaaki Kitano, Sung-Wng Kim, Toshiharu Yokoyama, Michikazu Hara, Hideo Hosono

    ACS CATALYSIS   4 ( 2 )   674 - 680   2014.2

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  • Effect of preparation conditions on the structural and acid catalytic properties of protonated titanate nanotubes Reviewed

    Emiko Wada, Masaaki Kitano, Kiyotaka Nakajima, Michikazu Hara

    Journal of Materials Chemistry A   1 ( 41 )   12768 - 12774   2013.11

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    DOI: 10.1039/c3ta13015k

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  • Titania as an early transition metal oxide with a high density of lewis acid sites workable in water Reviewed

    Kiyotaka Nakajima, Ryouhei Noma, Masaaki Kitano, Michikazu Hara

    Journal of Physical Chemistry C   117 ( 31 )   16028 - 16033   2013.8

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    DOI: 10.1021/jp404523r

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  • Efficient Conversion of Pyruvic Aldehyde into Lactic Acid by Lewis Acid Catalyst in Water Reviewed

    Yusuke Koito, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

    CHEMISTRY LETTERS   42 ( 8 )   873 - 875   2013.8

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    DOI: 10.1246/cl.130319

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  • Effect of the sputtering parameters on the physical properties and photocatalytic reactivity of TiO2 thin films prepared by an RF magnetron sputtering deposition method Reviewed

    Afshin Ebrahimi, Masaaki Kitano, Kazushi Iyatani, Yu Horiuchi, Masato Takeuchi, Masaya Matsuoka, Masakazu Anpo

    RESEARCH ON CHEMICAL INTERMEDIATES   39 ( 4 )   1593 - 1602   2013.4

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  • Electrical Properties of Amorphous Carbon Semiconductor Prepared Using a Naphthalene Precursor Reviewed

    Yasunori Inoue, Mayo Sugano, Shunsuke Kawakami, Masaaki Kitano, Kiyotaka Nakajima, Hideki Kato, Michikazu Hara

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   86 ( 1 )   45 - 50   2013.1

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    DOI: 10.1246/bcsj.20120201

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  • Synthesis and acid catalysis of zeolite-templated microporous carbons with SO3H groups Reviewed

    Kiichi Fukuhara, Kiyotaka Nakajima, Masaaki Kitano, Shigenobu Hayashi, Michikazu Hara

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   15 ( 23 )   9343 - 9350   2013

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    DOI: 10.1039/c3cp43853h

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  • Ammonia decomposition by ruthenium nanoparticles loaded on inorganic electride C12A7:e(-) Reviewed

    Fumitaka Hayashi, Yoshitake Toda, Yoshimi Kanie, Masaaki Kitano, Yasunori Inoue, Toshiharu Yokoyama, Michikazu Hara, Hideo Hosono

    CHEMICAL SCIENCE   4 ( 8 )   3124 - 3130   2013

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    DOI: 10.1039/c3sc50794g

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  • sp3-Linked Amorphous Carbon with Sulfonic Acid Groups as a Heterogeneous Acid Catalyst Reviewed

    Satoshi Suganuma, Kiyotaka Nakajima, Masaaki Kitano, Shigenobu Hayashi, Michikazu Hara

    CHEMSUSCHEM   5 ( 9 )   1841 - 1846   2012.9

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    DOI: 10.1002/cssc.201200010

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  • Photocatalytic oxidation of 2-propanol under visible light irradiation on TiO2 thin films prepared by an RF magnetron sputtering deposition method Reviewed

    Masaaki Kitano, Kazuhiro Iyatani, Ebrahimi Afsin, Yu Horiuchi, Masato Takeuchi, So-Hye Cho, Masaya Matsuoka, Masakazu Anpo

    RESEARCH ON CHEMICAL INTERMEDIATES   38 ( 6 )   1249 - 1259   2012.4

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  • SO3H-bearing mesoporous carbon with highly selective catalysis Reviewed

    Satoshi Suganuma, Kiyotaka Nakajima, Masaaki Kitano, Hideki Kato, Asako Tamura, Hidesato Kondo, Shinichiro Yanagawa, Shigenobu Hayashi, Michikazu Hara

    MICROPOROUS AND MESOPOROUS MATERIALS   143 ( 2-3 )   443 - 450   2011.9

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    DOI: 10.1016/j.micromeso.2011.03.028

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  • Magnetic Sponge Prepared with an Alkanedithiol-Bridged Network of Nanomagnets Reviewed

    Yoshikazu Ito, Akira Miyazaki, Kazuyuki Takai, Vajiravelu Sivamurugan, Takashi Maeno, Takeshi Kadono, Masaaki Kitano, Yoshihiro Ogawa, Naotake Nakamura, Michikazu Hara, Suresh Valiyaveettil, Toshiaki Enoki

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   133 ( 30 )   11470 - 11473   2011.8

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    DOI: 10.1021/ja204617a

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  • Synthesis and Characterization of Semiconducting Boron-doped Amorphous Carbon Materials Using an Organic Boron Compound as a Precursor Reviewed

    Yasunori Inoue, Masaaki Kitano, Kiyotaka Nakajima, Michikazu Hara

    CHEMISTRY LETTERS   40 ( 4 )   410 - 411   2011.4

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    DOI: 10.1246/cl.2011.410

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  • Nb2O5 center dot nH(2)O as a Heterogeneous Catalyst with Water-Tolerant Lewis Acid Sites Reviewed

    Kiyotaka Nakajima, Yusuke Baba, Ryouhei Noma, Masaaki Kitano, Junko N. Kondo, Shigenobu Hayashi, Michikazu Hara

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   133 ( 12 )   4224 - 4227   2011.3

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    DOI: 10.1021/ja110482r

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  • Structure and Catalysis of Cellulose-Derived Amorphous Carbon Bearing SO3H Groups Reviewed

    Kiichi Fukuhara, Kiyotaka Nakajima, Masaaki Kitano, Hideki Kato, Shigenobu Hayashi, Michikazu Hara

    CHEMSUSCHEM   4 ( 6 )   778 - 784   2011

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    DOI: 10.1002/cssc.201000431

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  • Synthesis and acid catalysis of cellulose-derived carbon-based solid acid Reviewed

    Satoshi Suganuma, Kiyotaka Nakajima, Masaaki Kitano, Daizo Yamaguchi, Hideki Kato, Shigenobu Hayashi, Michikazu Hara

    SOLID STATE SCIENCES   12 ( 6 )   1029 - 1034   2010.6

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    DOI: 10.1016/j.solidstatesciences.2010.02.038

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  • Structure and Acid Catalysis of Mesoporous Nb2O5 center dot nH(2)O Reviewed

    Kiyotaka Nakajima, Tsuyoshi Fukui, Hideki Kato, Masaaki Kitano, Junko N. Kondo, Shigenobu Hayashi, Michikazu Hara

    CHEMISTRY OF MATERIALS   22 ( 11 )   3332 - 3339   2010.6

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    DOI: 10.1021/cm100391q

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  • Photocatalytic activity of visible light-responsive TiO2 thin films deposited on various anodized Ti-metal substrates by a RF magnetron sputtering method Reviewed

    Tae-Ho Kim, Masaya Matsuoka, Masaaki Kitano, Takashi Kamegawa, Yoshihisa Itoh, Masato Takeuchi, Masakazu Anpo

    RESEARCH ON CHEMICAL INTERMEDIATES   36 ( 3 )   319 - 326   2010.4

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  • Heterogeneous photocatalytic cleavage of water Reviewed

    Masaaki Kitano, Michikazu Hara

    JOURNAL OF MATERIALS CHEMISTRY   20 ( 4 )   627 - 641   2010

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  • Separate evolution of H-2 and O-2 from H2O on visible light-responsive TiO2 thin film photocatalysts prepared by an RF magnetron sputtering method Reviewed

    Masaya Matsuoka, Afshin Ebrahimi, Masaki Nakagawa, Tae-Ho Kim, Masaaki Kitano, Masato Takeuchi, Masakazu Anpo

    RESEARCH ON CHEMICAL INTERMEDIATES   35 ( 8-9 )   997 - 1004   2009.11

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  • Preparation of a Sulfonated Porous Carbon Catalyst with High Specific Surface Area Reviewed

    Masaaki Kitano, Keisuke Arai, Atsushi Kodama, Tsutomu Kousaka, Kiyotaka Nakajima, Shigenobu Hayashi, Michikazu Hara

    CATALYSIS LETTERS   131 ( 1-2 )   242 - 249   2009.8

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    DOI: 10.1007/s10562-009-0062-4

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  • Preparation of solid acid carbon coating on the surface of TiO2 by photo-CVD of gaseous aromatic hydrocarbons Reviewed

    Akira Nakajima, Katsuhiro Horie, Michikazu Hara, Masaaki Kitano, Toshihiro Isobe, Yoshikazu Kameshima, Kiyoshi Okada

    CATALYSIS COMMUNICATIONS   10 ( 13 )   1670 - 1673   2009.7

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    DOI: 10.1016/j.catcom.2009.05.006

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  • Hydrolysis of Cellulose by a Solid Acid Catalyst under Optimal Reaction Conditions Reviewed

    Daizo Yamaguchi, Masaaki Kitano, Satoshi Suganuma, Kiyotaka Nakajima, Hideki Kato, Michikazu Hara

    JOURNAL OF PHYSICAL CHEMISTRY C   113 ( 8 )   3181 - 3188   2009.2

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  • Photocatalytic Hydrogen Production from Aqueous Solutions of Alcohol as Model Compounds of Biomass Using Visible Light-Responsive TiO(2) Thin Films Reviewed

    Shohei Fukumoto, Masaaki Kitano, Masato Takeuchi, Masaya Matsuoka, Masakazu Anpo

    CATALYSIS LETTERS   127 ( 1-2 )   39 - 43   2009.1

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    DOI: 10.1007/s10562-008-9769-x

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  • Hydrolysis of cellulose by amorphous carbon bearing SO3H, COOH, and OH groups Reviewed

    Satoshi Suganuma, Kiyotaka Nakajima, Masaaki Kitano, Daizo Yamaguchi, Hideki Kato, Shigenobu Hayashi, Michikazu Hara

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   130 ( 38 )   12787 - 12793   2008.9

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    DOI: 10.1021/ja803983h

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  • Hydrogen production using highly active titanium oxide-based photocatalysts Reviewed

    M. Kitano, K. Tsujimaru, M. Anpo

    TOPICS IN CATALYSIS   49 ( 1-2 )   4 - 17   2008.7

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    DOI: 10.1007/s11244-008-9059-2

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  • The effect of chemical etching by HF solution on the photocatalytic activity of visible light-responsive TiO2 thin films for solar water splitting Reviewed

    M. Kitano, K. Iyatani, K. Tsujimaru, M. Matsuoka, M. Takeuchi, M. Ueshima, J. M. Thomas, M. Anpo

    TOPICS IN CATALYSIS   49 ( 1-2 )   24 - 31   2008.7

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    DOI: 10.1007/s11244-008-9064-5

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  • Enhancement of the photocatalytic activity under visible-light irradiation over N-doped TiO2 modified by platinum chloride Reviewed

    Shinya Higashimoto, Kazuyoshi Takamatsu, Masashi Azuma, Masaaki Kitano, Masaya Matsuoka, Masakazu Anpo

    CATALYSIS LETTERS   122 ( 1-2 )   33 - 36   2008.4

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    DOI: 10.1007/s10562-007-9333-0

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  • Photocatalytic decomposition of lactic acid in water on a photoelectrochemical circuit system consisting of a rod-type TiO(2) electrode and silicon solar cell Reviewed

    Masaya Matsuoka, Takashi Kamegawa, Diana Rakhmawaty, Masaaki Kitano, Kiyohisa Wada, Masakazu Anpo

    TOPICS IN CATALYSIS   47 ( 3-4 )   162 - 165   2008.4

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    DOI: 10.1007/s11244-007-9017-4

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  • The effect of the hydrothermal treatment with aqueous NaOH solution on the photocatalytic and photoelectrochemical properties of visible light-responsive TiO2 thin films Reviewed

    Masaya Matsuoka, Masaaki Kitano, Shohei Fukumoto, Kazushi Iyatani, Masato Takeuchi, Masakazu Anpo

    CATALYSIS TODAY   132 ( 1-4 )   159 - 164   2008.3

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    DOI: 10.1016/j.cattod.2007.12.032

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  • Effect of HF treatment on the activity of TiO2 thing films for photocatalytic water splitting Reviewed

    M. Kitano, M. Matsuoka, T. Hosoda, M. Ueshima, M. Anpo

    RESEARCH ON CHEMICAL INTERMEDIATES   34 ( 5-7 )   577 - 585   2008

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  • Synthesis of nanowire TiO2 thin films by hydrothermal treatment and their photoelectrochemical properties Reviewed

    Masaaki Kitano, Ryo Mitsui, Diana Rakhmawaty Eddy, Zeinhom M. A. El-Bahy, Masaya Matsuoka, Michio Ueshima, Masakazu Anpo

    CATALYSIS LETTERS   119 ( 3-4 )   217 - 221   2007.12

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    DOI: 10.1007/s10562-007-9243-1

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  • Recent developments in titanium oxide-based photocatalysts Reviewed

    Masaaki Kitano, Masaya Matsuoka, Michio Ueshima, Masakazu Anpo

    APPLIED CATALYSIS A-GENERAL   325 ( 1 )   1 - 14   2007.5

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  • The design of highly active rectangular column-structured titanium oxide photocatalysts and their application in purification systems Reviewed

    Takeshi Kudo, Yuko Kudo, Azuma Ruike, Akira Hasegawa, Masaaki Kitano, Masakazu Anpo

    CATALYSIS TODAY   122 ( 1-2 )   14 - 19   2007.4

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    DOI: 10.1016/j.cattod.2007.01.058

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  • Photocatalysis for new energy production - Recent advances in photocatalytic water splitting reactions for hydrogen production Reviewed

    Masaya Matsuoka, Masaaki Kitano, Masato Takeuchi, Koichiro Tsujimaru, Masakazu Anpo, John M. Thomas

    CATALYSIS TODAY   122 ( 1-2 )   51 - 61   2007.4

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    DOI: 10.1016/j.cattod.2007.01.042

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  • Photocatalytic water splitting using Pt-loaded visible light-responsive TiO2 thin film photocatalysts Reviewed

    Masaaki Kitano, Masato Takeuchi, Masaya Matsuoka, John A. Thomas, Masakazu Anpo

    CATALYSIS TODAY   120 ( 2 )   133 - 138   2007.2

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    DOI: 10.1016/j.cattod.2006.07.043

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  • Photocatalytic and photoelectrochemical properties of nitrogen-substituted TiO2 thin films prepared by an RF magnetron sputtering deposition method Reviewed

    Masaaki Kitano, Takeshi Kudo, Masaya Matsuoka, Michio Ueshima, Masakazu Anpo

    ECO-MATERIALS PROCESSING AND DESIGN VIII   544-545   107 - +   2007

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    DOI: 10.4028/www.scientific.net/MSF.544-545.107

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  • Decomposition of water in the separate evolution of hydrogen and oxygen using visible light-responsive TiO2 thin film photocatalysts: Effect of the work function of the substrates on the yield of the reaction Reviewed

    Masaaki Kitano, Koichiro Tsujimaru, Masakazu Anpo

    APPLIED CATALYSIS A-GENERAL   314 ( 2 )   179 - 183   2006.11

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    DOI: 10.1016/j.apcata.2006.08.017

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  • FUEL 20-Photocatalytic hydrogen production from water using visible light-responsive TiO2 thin films prepared by an RF magnetron sputtering deposition method Reviewed

    Masaaki Kitano, Masato Takeuchi, Masaya Matsuoka, Michio Ueshima, John Meurig Thomas, Masakazu Anpo

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   232   2006.9

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  • Separate evolution of H-2 and O-2 from H2O using visible light-responsive TiO2 thin film photocatalysts Reviewed

    Masakazu Anpo, Masaaki Kitano, Masato Takeuchi, Masaya Matsuoka, John Meurig Thomas

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   231   2006.3

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  • Extending the Photoresponse of TiO2 to the Visible Light Region: Photoelectrochemical Behavior of TiO2 Thin Films Prepared by the Radio Frequency Magnetron Sputtering DepositionMethod Reviewed

    H. Kikuchi, M. Kitano, M. Takeuchi, M. Matsuoka, M. Anpo, P. V. Kamat

    110   5537 - 5541   2006.2

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  • The preparation of visible light-responsive TiO2 thin films by applying a RF-magnetron sputtering deposition method and their photocatalytic reactivity for the decomposition of water with a separate evolution of H-2 and O-2 Reviewed

    Masaaki Kitano, Hisashi Kikuchi, Takahiro Hosoda, Masato Takeuchi, Masaya Matsuoka, Takashi Eura, Masakazu Anpo, John M. Thomas

    SCIENCE OF ENGINEERING CERAMICS III   317-318   823 - 826   2006

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.4028/www.scientific.net/KEM.317-318.823

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  • Design and Development of Second-Generation Titanium Oxide PhotocatalystMaterials Operating under Visible Light Irradiation by Applying AdvancedIon-Engineering Techniques Reviewed

    K. Iino, M. Kitano, M. Takeuchi, M. Matsuoka, M. Anpo

    6   982 - 986   2005.9

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  • Photocatalytic water splitting on visible light-responsive TiO2 thin films prepared by a RF magnetron sputtering deposition method Reviewed

    M Matsuoka, M Kitano, M Takeuchi, M Anpo, JM Thomas

    TOPICS IN CATALYSIS   35 ( 3-4 )   305 - 310   2005.7

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    DOI: 10.1007/s11244-005-3838-9

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  • Preparation of Visible Light-responsive TiO2 Thin Film Photocatalysts by an RF Magnetron Sputtering Deposition Method and Their Photocatalytic Reactivity Reviewed

    M. Kitano, M. Takeuchi, M. Matsuoka, J. M. Thomas, M. Anpo

    Chem. Lett.   34   616 - 617   2005.3

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  • The preparation and characterization of highly efficient titanium oxide-based photofunctional materials Reviewed

    M Anpo, S Dohshi, M Kitano, Y Hu, M Takeuchi, M Matsuoka

    ANNUAL REVIEW OF MATERIALS RESEARCH   35   1 - 27   2005

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    DOI: 10.1146/annurev.matsci.35.100303.121340

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  • Preparation and characterization of the visible light responsive TiO2 thin film photocatalysts prepared by magnetron sputtering method and their photocatalytic activities for the water splitting reactions Reviewed

    M Matsuoka, M Kitano, M Takeuchi, M Anpo, JM Thomas

    ECO-MATERIALS PROCESSING & DESIGN VI   486-487   81 - 84   2005

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  • Hydrogen production using semiconducting oxide photocatalysts Reviewed

    SC Moon, Y Matsumura, M Kitano, M Matsuoka, M Anpo

    RESEARCH ON CHEMICAL INTERMEDIATES   29 ( 3 )   233 - 256   2003

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MISC

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Presentations

  • Development of Hydride and nitride materials for Low temperature ammonia synthesis Invited

    Masaaki Kitano

    2024 MRS Fall Meeting & Exhibit  2024.12 

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    Event date: 2024.12

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  • Catalytic ammonia synthesis at solid surface anion sites Invited

    Masaaki Kitano

    The 10th International Symposium on Surface Science (ISSS-10)  2024.10 

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    Event date: 2024.10

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  • Development of highly active solid catalysts with functional anion sites for green ammonia synthesis Invited

    Masaaki Kitano

    24th International Conference on Photochemical Conversion and Storage of Solar Energy (IPS-24)/ International Conference on Artificial Photosynthesis-2024 (ICARP2024)  2024.7 

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    Event date: 2024.7 - 2024.8

    Presentation type:Oral presentation (invited, special)  

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  • Challenge to Molecular Transformation of N2, O2, and CO2 by Solid Catalysts under Mild Conditions Invited

    Masaaki Kitano

    International Symposium on Air Key Component Transformation  2024.4 

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    Event date: 2024.4

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  • 固体材料のアニオンサイトが拓く触媒機能~グリーンアンモニアプロセス構築に向けて~ Invited

    北野政明

    触媒化学融合研究センター特別講演会  2024.2 

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  • ヘテロアニオンサイトを反応場とするアンモニア合成・分解反応 Invited

    北野政明

    第7回 東日本キャタリシスセミナー  2024.1 

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  • 固体材料のアニオンサイト制御による活性触媒表面の構築 Invited

    北野政明

    日本表面真空学会 関東支部セミナー「カーボンニュートラルを切り開く表面真空科学」  2024.3 

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  • 無機固体触媒および光触媒による高効率アンモニア合成 Invited

    北野政明

    日本化学会 第104春季年会 (2024)  2024.3 

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  • New design of heterogeneous catalysts for green ammonia Invited

    Masaaki Kitano

    Lecture at Shanghai Jiao Tong University  2024.4 

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  • アニオンサイト制御による高効率アンモニア合成触媒の構築-グリーンアンモニアプロセス構築を目指して- Invited

    北野政明

    新化学技術推進協会 先端化学・材料技術部会 高選択性反応分科会 講演会 「アンモニア合成触媒の最新の研究開発動向」  2024.4 

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  • 固体表面アニオンが機能するアンモニア合成触媒 Invited

    北野政明

    学術変革領域研究(A)「イオン渋滞学」-イオン流の非平衡性と集団運動の理解による材料デザイン改革- 第一回領域会議  2024.6 

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  • Novel solid catalysts with functional anion sites for ammonia synthesis Invited

    Masaaki Kitano

    Tokyo University, Zassikai Seminar  2024.1 

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  • 高効率アンモニア合成および分解のための触媒材料開発 Invited

    北野政明

    日本MRS水素科学技術連携研究会 第2回産学交流勉強会  2025.2 

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  • アニオンサイトが機能する固体触媒の創出とグリーンアンモニア合成への展開 Invited

    北野政明

    2024年応化談話会  2024.9 

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  • Hydrides and Nitrides for Catalytic Ammonia Synthesis Invited

    Masaaki Kitano

    International symposium of Institute for Catalysis 2024, “Development of Catalyst Technology for Resource Recycling”  2024.10 

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  • Catalytic ammonia synthesis by mixed anion materials Invited

    Masaaki Kitano

    Lecture at Max-Planck-Institut für Kohlenforschung  2024.7 

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Awards

  • 2022 Outstanding Researcher Award

    2022.10   Asian-Pacific Association of Catalysis Societies  

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  • Best Poster Award (First Prize)

    2020.3   1st International Symposium "Hydrogenomics  

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  • 第18回GSC賞 奨励賞

    2019.5   JACI 新化学技術推進協会  

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  • 東工大の星支援【STAR】

    2019.3   東京工業大学  

    北野 政明

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  • 科学技術分野の文部科学大臣表彰 若手科学者賞

    2017.4  

    北野 政明

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  • 東工大挑戦的研究賞学長特別賞

    2016.7  

    北野 政明

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  • 石油学会奨励賞(千代田化工建設賞)

    2016.5  

    北野 政明

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  • 第30回若い世代の特別講演証

    2016.3   日本化学会  

    北野 政明

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  • 触媒学会奨励賞

    2016.3  

    北野 政明

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  • 手島精一記念研究賞(藤野志郎賞)

    2016.2  

    北野 政明

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  • 日本化学会第93 春季年会(2013)優秀講演賞(学術)

    2013.4  

    北野 政明

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  • 第110回触媒討論会若手優秀講演賞

    2012.9  

    北野 政明

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Research Projects

  • Creation of Novel Materials and Functions based on Ion Jamology

    Grant number:24H02204  2024.4 - 2029.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Transformative Research Areas (A)

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    Grant amount:\389870000 ( Direct Cost: \299900000 、 Indirect Cost:\89970000 )

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  • Development of novel solid catalysts by introducing various anions using oxygen vacancy sites

    Grant number:22K18914  2022.6 - 2024.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

    Kitano Masaaki

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    Grant amount:\6500000 ( Direct Cost: \5000000 、 Indirect Cost:\1500000 )

    We tried to introduce oxygen vacancy sites into various metal oxides such as titanium oxide by treating them with sodium naphthalenide as a strong reducing agent in a liquid phase. High density oxygen vacancies can be introduced into TiO2 and CeO2, and phosphate groups can be fixed on these oxide surface. The fixed phosphate groups are more than 10 times higher than the conventional method. The resultant materials exhibited high catalytic activity for the conversion of xylose into furfral with high selectivity. And the catalyst with a greater amount of phosphate groups introduced was able to synthesize furfural with higher selectivity.

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  • 機能性アニオンサイトを有する革新的固体触媒による低温アンモニア合成

    Grant number:22H00272  2022.4 - 2026.3

    日本学術振興会  科学研究費助成事業  基盤研究(A)

    北野 政明

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    Grant amount:\42250000 ( Direct Cost: \32500000 、 Indirect Cost:\9750000 )

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  • アニオン空孔を制御したメソポーラス酸窒素水素化物の合成とアンモニア合成

    Grant number:21F21032  2021.4 - 2023.3

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    北野 政明, ZHANG ZHUJUN

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    Grant amount:\2300000 ( Direct Cost: \2300000 )

    メソポーラス構造を持つ酸窒素水素化物の探索を行う中で、Ba-Si系酸窒素水素化物の合成に成功した。Ruを担持したBa-Si系酸窒素水素化物は、同じ結晶構造を有する酸化物にRuを担持した触媒と比較して数10倍高いアンモニア合成活性を示した。本触媒は、以前当研究室で見出した酸窒素水素化物であるBaCeO3-xNyHzにRuを担持した触媒よりも高活性であった。また、アンモニア合成に対する活性化エネルギーは60 kJ/mol程度であり、酸化物担持Ru系触媒(約100kJ/mol)よりも低い活性化エネルギーでアンモニア合成を促進できることが示唆された。また、合成したBa-Si系酸窒素水素化物は、表面積が5 m2/g程度であり結晶格子内に、高濃度にN3-およびH-イオンが含まれていることがわかった。さらに、Ba-Si比を変化させることで、表面積が著しく向上し規則的な細孔構造は有していないものの、100m2/g程度の表面積を有する酸窒素水素化物の合成にも成功した。この高表面積なBa-Si系酸窒素水素化物にRuを担持した触媒は、2倍程度高いアンモニア合成活性を示した。このことから、高表面積化による反応に利用できる界面アニオン種の増大が触媒活性向上の主要因であることが示唆された。さらに、本触媒は100時間以上の長時間反応に対しても活性が低下することなく安定であり、反応後の結晶構造も反応前と変化がなく安定な材料であることが明らかとなった。

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  • 格子窒素及び水素を利用した活性触媒界面の形成とその作用機構解明

    Grant number:21H00019  2021.4 - 2023.3

    日本学術振興会  科学研究費助成事業  新学術領域研究(研究領域提案型)

    北野 政明

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    Grant amount:\4940000 ( Direct Cost: \3800000 、 Indirect Cost:\1140000 )

    担体の格子アニオンサイトによる遷移金属ナノ粒子触媒のアンモニア分解に対する促進効果を調べる中で、CaNHを担体としNiナノ粒子を担持した触媒が極めて高いアンモニア分解活性を示すことを明らかにした。Ni/CaNH触媒は、一般的な酸化物にNiを担持した触媒であるNi/Al2O3やNi/CaOに比べて約100℃低温でアンモニア分解反応を進行させることがわかった。また、触媒中に含まれるNi重量当たりの水素生成速度を算出したところ、世界最高レベルの触媒活性を持つことが明らかとなった。
    Niを担持していないCaNHそのものにもアンモニア分解活性が確認され、同位体を用いた実験やDFT計算などにより、CaNH表面に生じるNH2-欠陥に局在する2個の電子がアンモニア分子を活性化することを明らかにした。Ni表面上へのアンモニア吸着エネルギーよりもNH欠陥を有するCaNH表面へのアンモニア吸着エネルギーの方が大きいことが示され、アンモニア分子の活性点がNi表面ではなく、CaNH上のアニオン空孔サイトであることが明らかとなった。実際に、アニオン空孔を形成したCaNHこ、アンモニアガスを50℃で導入すると、アニオン空孔の再生とともに水素を放出する。すなわち、アニオン空孔の電子がアンモニア分子と反応し、活性化していることが明らかとなった。この時、中間体としてNH2種が表面に形成されることがFTIRによって確認できている。一方、CaNH上に担持されたNiナノ粒子は、NH2-欠陥サイトの形成を促進している。以上のように、Ni/CaNH触媒上では、Ni-CaNH活性触媒界面の格子NHサイトが関与するMars-van Krevelen型機構でアンモニア分解反応が促進されていることが示された。

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  • ヒドリド化合物を利用した貴金属フリーなアンモニア合成・分解触媒の創出

    Grant number:19H02512  2019.4 - 2022.3

    日本学術振興会  科学研究費助成事業 基盤研究(B)  基盤研究(B)

    北野 政明

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    Grant amount:\17550000 ( Direct Cost: \13500000 、 Indirect Cost:\4050000 )

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  • Elucidation of the relationship between hydride ion conductivity and reaction mechanism in catalysis

    Grant number:19H05051  2019.4 - 2021.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

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    Grant amount:\4810000 ( Direct Cost: \3700000 、 Indirect Cost:\1110000 )

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  • Development of hydrogenation and dehydrogenation catalysts using electride with hydrogen storage ability

    Grant number:15H04183  2015.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    Kitano Masaaki

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    Grant amount:\17940000 ( Direct Cost: \13800000 、 Indirect Cost:\4140000 )

    In the present study, we have focused on the hydrogenation or dehydrogenation reactions over electride (or hydride) supported metal nanoparticle catalysts. And the relationship between the catalytic activity and the hydrogen storage ability was investigated. C12A7 supported Ru-Fe bimetallic catalyst exhibited high activity for selective hydrogenation of unsaturated aldehydes. Ca2NH and Ca(NH2)2 supported Ru catalysts showed excellent activity for low-temperature ammonia synthesis.

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  • Synthesis of alloy nanoparticle catalysts by solvated electron

    Grant number:15K13801  2015.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research  Grant-in-Aid for Challenging Exploratory Research

    Kitano Masaaki, TSUJI Yuki, FUKAZU Yuhei

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    Grant amount:\4030000 ( Direct Cost: \3100000 、 Indirect Cost:\930000 )

    In the present study, we have investigated the preparation of alloy nanoparticle catalysts by using solvated electron with high reducing power. Sodium naphthalenide can be prepared by reacting sodium metal with naphthalene in THF solution. And it is known to be a strong reducing agent (E0 = 3.1 V). We have successfully prepared Co-Mo alloy nanoparticles with a particle size of 4 nm yb using this reducing agent. The Co-Mo alloy nanoparticles loaded on CeO2 exhibits much higher catalytic activity for ammonia synthesis than monometallic catalysts such as Co/CeO2 and Mo/CeO2. In addition, the catalytic activity Co-Mo/CeO2 is comparable to that of Co3Mo3N, even if the amount of loading metal in Co-Mo/CeO2 was only 1/20 of that in Co3Mo3N.

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  • Synthesis of titanate nanotube solid acid catalysts and C-C bond formation reaction

    Grant number:23686115  2011.11 - 2014.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (A)  Grant-in-Aid for Young Scientists (A)

    KITANO Masaaki

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    Grant amount:\6630000 ( Direct Cost: \5100000 、 Indirect Cost:\1530000 )

    Protonated titanate nanotubes were synthesized under various conditions and modified by doping with heteroatoms. These catalysts were applied for C-C bond formation reactions. TiO2 nanoparticles were converted into titanate nanotubes or nanorods depending on the synthesis conditions and effective Bronsted and Lewis acid sites were only formed on the
    surface of the titanate nanotubes. In addition, when Nb5+ and Ta5+ ions were doped into the titanate nanotubes, the catalytic performance was enhanced by a factor of 10.

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  • Development of carbon-based solid acid with nanotube structure

    Grant number:20760533  2008 - 2010

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

    KITANO Masaaki

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    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

    Protonated titanate nanotubes with an inner diameter of 6 nm were successfully synthesized by hydrothermal treatment of TiO2 with NaOH and subsequent proton exchange. This material exhibited much higher catalytic activity that conventional solid acid catalysts such as zeolite and ion-exchange resins. Friedel-Crafts alkylation proceeded effectively over protonated titanate nanotubes at room temperature. The remarkable catalytic performance is due to the synergetic combination of Bronsted and Lewis acid sites.

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