Origin and Dynamics of Oxygen Storage/Release in a Pt/Ordered CeO₂–ZrO₂ Catalyst Studied by Time‐Resolved XAFS Analysis

Abstract

Electronic and structural dynamics of an industrially relevant Pt/CeO2–ZrO2 catalyst with an ordered arrangement of Ce and Zr ions during oxygen storage/release processes at 573–773 K were studied in real time by time-resolved energy-dispersive XAFS at the Zr K edge and Ce L3 edge (see experimental setup). On the basis of these results, the roles of Ce and Zr ions in the function of the mixed-oxide catalyst were elucidated. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z703085_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.