Journal
CATALYSIS TODAY
Volume 181, Issue 1, Pages 52-55Publisher
ELSEVIER
DOI: 10.1016/j.cattod.2011.08.033
Keywords
Thin oxide films; CO oxidation; Scanning tunneling microscopy
Funding
- DFG through the Cluster of Excellence UNICAT
- Fonds der Chemischen Industrie
- Alexander von Humboldt Foundation
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We provide experimental evidence that the low temperature CO oxidation reaction on an ultrathin FeO(1 1 1) film on Pt(1 1 1) proceeds through the Mars-van Krevelen type mechanism which includes the following steps: the FeO film is oxidized into an FeO2-x film with trilayer O-Fe-O structure; CO reacts with the weakly bound, topmost oxygen atoms, effectively reducing the FeO2-x surface to FeO-like; and the subsequent oxidation by O-2 recovers the FeO2-x structure. (C) 2011 Elsevier B.V. All rights reserved.
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