Spectroscopic detection of CO dissociation on defect sites on Ru(109): implications for Fischer-Tropsch catalytic chemistry

被引：52

作者：

Zubkov, T ^{[1
]}

Morgan, GA ^{[1
]}

Yates, JT ^{[1
]}

机构：

[1] Univ Pittsburgh, Ctr Surface Sci, Chevron Sci Ctr 234, Dept Chem, Pittsburgh, PA 15260 USA

来源：

CHEMICAL PHYSICS LETTERS | 2002年 / 362卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(02)00895-3

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：

Dissociative chemistry of CO on an atomically stepped single crystal Ru(1 0 9) surface was studied using the combination of vibrational spectroscopic and thermal desorption measurements. CO molecules on stepped Ru are by desorption and dissociation together upon heating to 480 K. Contrary to the atomically smooth Ru(0 0 1) surface, the step defect sites on the Ru(1 0 9) surface facilitate CO dissociation. Adsorbed atomic O and C then recombinatively desorb near 520 K. This low-temperature mobile carbon species is likely to be an intermediate in the Fischer-Tropsch synthesis on Ru. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：181 / 184

页数：4

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