Catalysis on mesoscopic composite surfaces:: Influence of palladium boundaries on pattern formation during CO oxidation on Pt(1 1 0)

被引：19

作者：

Lauterbach, J

Asakura, K

Rasmussen, PB

Rotermund, HH

Bär, M

Graham, MD

Kevrekidis, IG

Ertl, G

机构：

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

[2] Purdue Univ, Sch Chem Engn, W Lafayette, IN 47907 USA

[3] Univ Tokyo, Fac Sci, Res Ctr Spectrochem, Tokyo 113, Japan

[4] FOM, Inst Atom & Mol Phys, NL-1098 SJ Amsterdam, Netherlands

[5] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

[6] Univ Wisconsin, Dept Chem Engn, Madison, WI 53706 USA

[7] Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA

来源：

PHYSICA D | 1998年 / 123卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

CO oxidation; pattern formation; composite catalyst; photoemission electron microscope; pt(1 1 0);

D O I：

10.1016/S0167-2789(98)00145-6

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

The effect of well-defined palladium boundaries on the formation of reaction-diffusion patterns during the oxidation of CO on Pt(1 1 0) has been investigated. The Pd boundaries were created by microlithography technique. Reaction-diffusion patterns formed on this surface were observed by photoemission electron microscopy (PEEM). On a multilayer Pd-covered Pt(1 1 0) surface, depending on the partial pressures, Pd areas may act as a reservoir of CO for adjacent Pt regions. Therefore, patterns forming on the bare Pt areas exhibit a pronounced interaction with the artificial Pt/Pd boundaries. Copyright (C) 1998 Elsevier Science B.V.

引用

页码：493 / 501

页数：9

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