Oxidation of CO on Pt(111) at intermediate pressures

被引：20

作者：

Colen, RER ^{[1
]}

Christoph, J ^{[1
]}

Pena, F ^{[1
]}

Rotermund, HH ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

来源：

SURFACE SCIENCE | 1998年 / 408卷 / 1-3期

关键词：

carbon monoxide; ellipsometry; oxidation; oxygen; platinum;

D O I：

10.1016/S0039-6028(98)00258-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The oscillatory kinetics of CO oxidation over a (111)-oriented platinum crystal at an oxygen pressure of 10(-2) mbar is observed. This is surprising because it cannot be explained by the reconstruction model commonly utilised to describe oscillations on Pt(110) and Pt(100). Additionally, with a relatively new imaging technique (EMSI), island growth is observed on the surface, exhibiting a feature that has not been observed previously with PEEM (photoemission electron microscope). By combining these two experimental results, an explanation in terms of oxidation reduction cycles of the surface becomes plausible. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：310 / 316

页数：7

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