Adsorbed NHx species on Pt(111) and Pt(100) surfaces studied by the semi-empirical method of interacting bonds

被引：6

作者：

Cholach, AR ^{[1
]}

Bulgakov, NN ^{[1
]}

机构：

[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

来源：

CATALYSIS LETTERS | 1999年 / 58卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

platinum single-crystal surfaces; NHx intermediates; semi-empirical calculations;

D O I：

10.1023/A:1019094304535

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 properties of the adsorbed NHx species (x=0,1,2,3) on platinum(111) and (100)-(1x1) single-crystal planes are studied by the semi-empirical method of interacting bonds. Both surfaces reveal similar features. The adsorbed species NH and NH2 are stable on the surface, and stable NH3(ads) species cannot form. The NH2(ads) species is favourable in adsorbed hydrogen excess, but lack of the latter results in NHads becoming dominant. Both NH and NH2 species are expected to diffuse easily over the surface due to the small difference between their bond strengths to various adsorption sites.

引用

页码：183 / 187

页数：5

共 25 条

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[2]

BOLDYREV AI, 1976, KINET CATAL, V17, P706

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