Low-temperature carbon monoxide oxidation on Pt(111). Dependence of apparent activation energy on reactant gas composition

Christopher Hardacre; R. Mark Ormerod; Richard M. Lambert

doi:10.1016/0009-2614(93)85536-W

Low-temperature carbon monoxide oxidation on Pt(111). Dependence of apparent activation energy on reactant gas composition

Christopher Hardacre^*, R. Mark Ormerod, Richard M. Lambert

^*Corresponding author for this work

University of Cambridge

Research output: Contribution to journal › Article › peer-review

Abstract

The low-temperature catalytic oxidation of CO by O₂ over a pure Pt(111) surface has been studied over a range of CO:O₂ partial pressure ratios at a total pressure of 10 Torr. A marked variation in apparent activation energy with gas composition is found, with a pronounced minimum in the vicinity of the stoichiometric ratio (2:1). The results may be understood in terms of changes in the strength of MCO and MO bonding.

Original language	English
Pages (from-to)	171-174
Number of pages	4
Journal	Chemical Physics Letters
Volume	206
Issue number	1-4
DOIs	https://doi.org/10.1016/0009-2614(93)85536-W
Publication status	Published - 30 Apr 1993

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title = "Low-temperature carbon monoxide oxidation on Pt(111). Dependence of apparent activation energy on reactant gas composition",

abstract = "The low-temperature catalytic oxidation of CO by O2 over a pure Pt(111) surface has been studied over a range of CO:O2 partial pressure ratios at a total pressure of 10 Torr. A marked variation in apparent activation energy with gas composition is found, with a pronounced minimum in the vicinity of the stoichiometric ratio (2:1). The results may be understood in terms of changes in the strength of MCO and MO bonding.",

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AU - Hardacre, Christopher

AU - Ormerod, R. Mark

AU - Lambert, Richard M.

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Y1 - 1993/4/30

N2 - The low-temperature catalytic oxidation of CO by O2 over a pure Pt(111) surface has been studied over a range of CO:O2 partial pressure ratios at a total pressure of 10 Torr. A marked variation in apparent activation energy with gas composition is found, with a pronounced minimum in the vicinity of the stoichiometric ratio (2:1). The results may be understood in terms of changes in the strength of MCO and MO bonding.

AB - The low-temperature catalytic oxidation of CO by O2 over a pure Pt(111) surface has been studied over a range of CO:O2 partial pressure ratios at a total pressure of 10 Torr. A marked variation in apparent activation energy with gas composition is found, with a pronounced minimum in the vicinity of the stoichiometric ratio (2:1). The results may be understood in terms of changes in the strength of MCO and MO bonding.

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Low-temperature carbon monoxide oxidation on Pt(111). Dependence of apparent activation energy on reactant gas composition

Abstract

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