Oxidation of carbon monoxide over Au(1 1 0)-(1 × 2)

We have studied the oxidation of carbon monoxide (CO) on an oxygen-precovered gold (1 1 0)-(1 × 2) surface. At low oxygen coverages, the reaction is first-order in the oxygen coverage and has an apparent activation energy of −1.8 kJ/mol. Assuming a Langmuir–Hinshelwood mechanism we evaluated a true...

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Bibliographic Details
Published in:	Surface science Vol. 566; pp. 1112 - 1117
Main Authors:	Michael Gottfried, J., Christmann, Klaus
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 20-09-2004
Subjects:	Carbon dioxide Carbon monoxide Gold Models of surface chemical reactions Oxygen Single crystal surfaces Surface chemical reaction Gold Oxygen Carbon dioxide Surface chemical reaction Single crystal surfaces Carbon monoxide Models of surface chemical reactions
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Summary:	We have studied the oxidation of carbon monoxide (CO) on an oxygen-precovered gold (1 1 0)-(1 × 2) surface. At low oxygen coverages, the reaction is first-order in the oxygen coverage and has an apparent activation energy of −1.8 kJ/mol. Assuming a Langmuir–Hinshelwood mechanism we evaluated a true activation energy of 57 kJ/mol. A complete reaction energy diagram of the CO oxidation on Au(1 1 0) is reported.
ISSN:	0039-6028 1879-2758
DOI:	10.1016/j.susc.2004.06.067