Communication

In Situ Redispersion of Platinum Autoexhaust Catalysts: An On-Line Approach to Increasing Catalyst Lifetimes?†

  1. Yasutaka Nagai Dr.1,
  2. Kazuhiko Dohmae1,
  3. Yasuo Ikeda2,
  4. Nobuyuki Takagi3,
  5. Toshitaka Tanabe1,
  6. Naoyuki Hara2,
  7. Gemma Guilera Dr.4,
  8. Sakura Pascarelli Dr.4,
  9. Mark A. Newton Dr.4,
  10. Oji Kuno5,
  11. Hongying Jiang Dr.5,
  12. Hirofumi Shinjoh Dr.1,
  13. Shin'ichi Matsumoto Dr.6

Article first published online: 10 OCT 2008

DOI: 10.1002/anie.200803126

Issue

Angewandte Chemie International Edition

Angewandte Chemie International Edition

Volume 47, Issue 48, pages 9303–9306, November 17, 2008

Additional Information

How to Cite

Nagai, Y., Dohmae, K., Ikeda, Y., Takagi, N., Tanabe, T., Hara, N., Guilera, G., Pascarelli, S., Newton, Mark A., Kuno, O., Jiang, H., Shinjoh, H. and Matsumoto, S. (2008), In Situ Redispersion of Platinum Autoexhaust Catalysts: An On-Line Approach to Increasing Catalyst Lifetimes?. Angew. Chem. Int. Ed., 47: 9303–9306. doi: 10.1002/anie.200803126

Author Information

  1. 1

    TOYOTA Central R&D Labs., Inc. Nagakute, Aichi 480-1192 (Japan), Fax: (+81) 561-63-6150

  2. 2

    TOYOTA Motor Europe Technical Centre, Zaventem (Belgium)

  3. 3

    Higashi-Fuji Technical Center, TOYOTA Motor Corporation, Shizuoka (Japan)

  4. 4

    European Synchrotron Radiation Facility, Grenoble (France)

  5. 5

    TOYOTA Motor Engineering & Manufacturing North America, Inc., Michigan (USA)

  6. 6

    TOYOTA Motor Corporation, Toyota, Aichi (Japan)

  1. †

    We are grateful to Bernard Gorges, Olivier Mathon, Sebastien Pasternak, Florian Perrin, Steven Fiddy (ESRF), Muriel Lepage, Takashi Kuzuya (TOYOTA Motor Europe), Takamasa Nonaka, Satoshi Yamaguchi, Naoki Takahashi, Yoshiki Seno (TOYOTA Central R&D), Paul Fanson (TOYOTA Motor NA), Takeshi Hirabayashi, Masahide Miura, and Keisuke Kishita (TOYOTA Motor corporation) for their excellent work.

Publication History

  1. Issue published online: 12 NOV 2008
  2. Article first published online: 10 OCT 2008
  3. Manuscript Received: 30 JUN 2008

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Keywords:

  • electron microscopy;
  • heterogeneous catalysis;
  • platinum;
  • time-resolved spectroscopy;
  • X-ray absorption spectroscopy
Thumbnail image of graphical abstract

Dynamic observation: The rapid oxidative redispersion of large Pt nanoparticles supported on ceria-based oxide in autoexhaust catalysts is demonstrated in the absence of Cl by in situ XANES analysis. An atomic migration model accounts for the observed redispersion through the trapping of Pt species at sites on the Ce support that exhibit strong interactions between the Pt oxide and the support.

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