Operando XAFS study of catalytic NO reduction over Cu/CeO2: the effect of copper–ceria interaction under periodic operation

Yasutaka Nagai; Kazuhiko Dohmae; Yusaku F. Nishimura; Hitoshi Kato; Hirohito Hirata; Naoki Takahashi

doi:10.1039/C3CP44316G

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OperandoXAFS study of catalytic NO reduction over Cu/CeO₂: the effect of copper–ceria interaction under periodic operation†

Yasutaka Nagai,*^a Kazuhiko Dohmae,^a Yusaku F. Nishimura,^a Hitoshi Kato,^b Hirohito Hirata^c and Naoki Takahashi^a

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* Corresponding authors

^a Toyota Central R&D Labs., Inc., Aichi 480-1192, Nagakute, Japan
E-mail: e1062@mosk.tytlabs.co.jp
Fax: +81 561 63 6150
Tel: +81 561 71 7230

^b Toyota Motor Corporation, Aichi, Toyota, Japan

^c Toyota Motor Corporation Higashi-Fuji Technical Center, Shizuoka, Japan

Abstract

Using an operando time-resolved XAFS technique at the Cu and Ce K-edges, we have discovered that the synchronization of Cu and Ce valence change in Cu/CeO₂ under periodic (rich–lean cycling) operation can improve the catalytic activity for NO reduction at low temperature.

This article is part of the themed collection: Hard X-rays and the Frontiers of Materials Chemistry

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Article information

DOI: https://doi.org/10.1039/C3CP44316G
Article type: Communication
Submitted: 02 Dec 2012
Accepted: 17 Jan 2013
First published: 17 Jan 2013

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Phys. Chem. Chem. Phys., 2013,15, 8461-8465

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Operando XAFS study of catalytic NO reduction over Cu/CeO₂: the effect of copper–ceria interaction under periodic operation

Y. Nagai, K. Dohmae, Y. F. Nishimura, H. Kato, H. Hirata and N. Takahashi, Phys. Chem. Chem. Phys., 2013, 15, 8461 DOI: 10.1039/C3CP44316G

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