Abstraction of D adsorbed on Pt(100) surfaces by gaseous H atoms:: effect of surface heterogeneity

被引：30

作者：

Zecho, T

Brandner, B

Küppers, J

机构：

[1] Univ Bayreuth, D-95440 Bayreuth, Germany

[2] Max Planck Inst Plasmaphys, EURATOM Assoc, D-85748 Garching, Germany

来源：

SURFACE SCIENCE | 1998年 / 418卷 / 01期

关键词：

deuterium; hydrogen; platinum; surface chemical reaction; thermal desorption spectroscopy;

D O I：

10.1016/S0039-6028(98)00735-3

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：

D-(H)-covered Pt(100) surfaces were exposed to thermal H (D) atoms at 90 K and the kinetics of reaction product formation was measured simultaneously with atom exposure. HD and D-2 (H-2) were observed as reaction products. The kinetics of these products differ from the kinetics observed in the analogous reactions on Pt(lll) and Pt(110) surfaces, and give further evidence for structure sensitivity in abstraction reactions. The kinetics can be explained by assuming heterogeneity in reactivity and sticking. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：L26 / L30

页数：5

共 19 条

[1] A structural effect in direct reactions: Kinetics of D abstraction from Pt(110) 1 x 2 surfaces with gaseous H atoms [J].