The influence of surface reconstructions on the CO oxidation reaction rate for the O/Ag(110) surface

被引:22
作者
Burghaus, U [1 ]
Conrad, H [1 ]
机构
[1] MAX PLANCK GESELL,FRITZ HABER INST,D-14195 BERLIN,GERMANY
关键词
carbon dioxide; carbon monoxide; catalysis; oxidation; oxygen; silver; surface chemical reaction; surface relaxation and reconstruction;
D O I
10.1016/0039-6028(95)01131-5
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 influence of the oxygen induced surface reconstructions on the CO2 production rate at the Ag(110)-O system will be discussed, based on titration, reactive thermal desorption and LEED measurements. We present evidence that the reactivity of oxygen is reduced in the temperature range of 190-250 K by embedding oxygen in a reconstructed surface as compared to chemisorbed oxygen; above 250 K the coverage dependence of the oxygen induced reconstructions generates an autocatalytic component into the CO2 formation rate.
引用
收藏
页码:201 / 205
页数:5
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