Visualization of Structure/Reactivity of Heterogeneous Catalysts by Operando Spatio/Temporal Imaging XAFS
| Project/Area Number |
18H01940
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 32010:Fundamental physical chemistry-related
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| Research Institution | Nagoya University |
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Principal Investigator |
Tada Mizuki 名古屋大学, 物質科学国際研究センター, 教授 (70396810)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2020: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2019: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2018: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
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| Keywords | イメージング / XAFS / CT / オペランド計測 / 固体触媒 / 複合酸化物 / 触媒 / 酸化物 / 可視化 |
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| Outline of Final Research Achievements |
We have developed XAFS-spectroscopy-imaging techniques combining hard X-ray imaging techniques and X-ray Absorption Fine Structure (spectroscopy) for the visualization of spatial element information inside solid materials. XAFS imaging provides spatial distribution of each element, oxidation state, local coordination structure inside solid particles and crystals and we visualized the reaction diffusions inside mixed oxides and solid catalysts by the XAFS imaging techniques. We succeeded in visualizing the oxidation reaction track inside ceria-zirconia solid-solution materials and redox reaction behaviors of Cr-doped iron oxide crystals for the first time.
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| Academic Significance and Societal Importance of the Research Achievements |
固体の機能性材料は、触媒をはじめとした様々な分野で用いられており、不均質な固体機能性材料中の元素の状態や分布、酸化状態の違い、局所構造の分布などはこれまで明らかにすることができなかった。本研究成果によって、不均質な固体材料中の個々の元素の化学状態の違いを可視化できるようになり、触媒特性や吸着特性などと関連する元素の反応分布や拡散を直接理解することができるようになった。
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Report
(4 results)
Research Products
(42 results)
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[Journal Article] 3D Operando Imaging and Quantification of Inhomogeneous Electrochemical Reactions in Composite Battery Electrodes2020
Author(s)
Yuta Kimura, Aina Tomura, Mahunnop Fakkao, Takashi Nakamura, Nozomu Ishiguro, Oki Sekizawa, Kiyofumi Nitta, Tomoya Uruga, Toyoki Okumura, Mizuki Tada, Yoshiharu Uchimoto, Koji Amezawa
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Journal Title
J. Phys. Chem. Lett.
Volume: 11
Issue: 9
Pages: 3629-3636
DOI
Related Report
Peer Reviewed
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[Journal Article] Reversible low-temperature redox activity and selective oxidation catalysis derived from the concerted activation of multiple metal species on Cr and Rh-incorporated ceria catalysts2019
Author(s)
Satoru Ikemoto, Xiubing Huang, Satoshi Muratsugu, Shoko Nagase, Takanori Koitaya, Hirosuke Matsui, Gen-ichi Yokota, Takatoshi Sudoh, Ayako Hashimoto, Yuanyuan Tan, Susumu Yamamoto, Jiayi Tang, Iwao Matsuda, Jun Yoshinobu, Toshihiko Yokoyama, Shinpei Kusaka, Ryotaro Matsuda, Mizuki Tada
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Journal Title
Physical Chemistry Chemical Physics
Volume: 21
Issue: 37
Pages: 20868-20877
DOI
Related Report
Peer Reviewed
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[Presentation] CT-XAFSを用いたバルク型全固体リチウムイオン電池合剤電極内の不均一反応のオペランド可視化計測2019
Author(s)
戸村愛菜, 木村勇太, Fakkao Mahunnop, 中村崇司, 石黒志, 関澤央輝, 新田清文, 宇留賀朋哉, 奥村豊旗, 唯美津木, 内本喜晴, 雨澤浩史
Organizer
電気化学会第86回大会
Related Report
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[Presentation] オペランドCT-XAFSを用いたバルク型全固体リチウムイオン電池用合剤電極内反応分布の定量的解析2018
Author(s)
木村勇太, 戸村愛菜, Fakkao Mahunnop, 中村崇司, 石黒志, 関澤央輝, 新田清文, 宇留賀朋哉, 奥村豊旗, 唯美津木, 内本喜晴, 雨澤浩史
Organizer
2018年電気化学秋季大会
Related Report
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[Presentation] オペランドCT-XAFSによるバルク型全固体リチウムイオン電池用合剤電極における反応分布形成要因の解明2018
Author(s)
木村勇太, 戸村愛菜, Fakkao Mahunnop, 中村崇司, 石黒志, 関澤央輝, 新田清文, 宇留賀朋哉, 奥村豊旗, 唯美津木, 内本喜晴, 雨澤浩史
Organizer
第59回電池討論会
Related Report
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