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Imaging of Oxygen Diffusion in Individual Platinum/Ce2 Zr2 Ox Catalyst Particles During Oxygen Storage and Release.
Matsui, Hirosuke; Ishiguro, Nozomu; Enomoto, Kaori; Sekizawa, Oki; Uruga, Tomoya; Tada, Mizuki.
Affiliation
  • Matsui H; Department of Chemistry, Graduate School of Science & Research Center for Materials Science (RCMS) & Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, Aichi, 464-8602, Japan.
  • Ishiguro N; RIKEN SPring-8 Center, Koto, Sayo, Hyogo, 679-5198, Japan.
  • Enomoto K; Department of Chemistry, Graduate School of Science & Research Center for Materials Science (RCMS) & Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, Aichi, 464-8602, Japan.
  • Sekizawa O; Innovation Research Center for Fuel Cells, The University of Electro-Communications, Tokyo, Japan.
  • Uruga T; Innovation Research Center for Fuel Cells, The University of Electro-Communications, Tokyo, Japan.
  • Tada M; Japan Synchrotron Radiation Research Center, Hyogo, Japan.
Angew Chem Int Ed Engl ; 55(39): 12022-5, 2016 09 19.
Article in En | MEDLINE | ID: mdl-27574097
ABSTRACT
The spatial distribution of Ce(3+) and Ce(4+) in each particle of Ce2 Zr2 Ox in a three-way conversion catalyst system was successfully imaged during an oxygen storage/release cycle by scanning X-ray absorption fine structure (XAFS) using hard X-ray nanobeams. For the first time, nano-XAFS imaging visualized and identified the modes of non-uniform oxygen diffusion from the interface of Pt catalyst and Ce2 Zr2 Ox support and the active parts in individual catalyst particles.
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Full text: 1 Database: MEDLINE Language: En Journal: Angew Chem Int Ed Engl Year: 2016 Type: Article Affiliation country: Japan
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Full text: 1 Database: MEDLINE Language: En Journal: Angew Chem Int Ed Engl Year: 2016 Type: Article Affiliation country: Japan