The effect of subsurface hydrogen on the adsorption of ethylene on Pd(111)

被引：38
作者：
Stacchiola, D
Tysoe, WT
机构：
[1] Univ Wisconsin, Dept Chem, Milwaukee, WI 53211 USA
[2] Univ Wisconsin, Surface Studies Lab, Milwaukee, WI 53211 USA
来源：
SURFACE SCIENCE | 2003年 / 540卷 / 2-3期
关键词：
infrared absorption spectroscopy; chemisorption; palladium; alkenes; hydrogen atom;
D O I：
10.1016/S0039-6028(03)00848-3
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：
The adsorption of ethylene on a hydrogen pre-covered Pd(111) surface was studied by reflection absorption infrared spectroscopy (RAIRS). The effect of either surface or subsurface hydrogen on the state of ethylene hybridization is explored by making use of the order-disorder transition of hydrogen on Pd(111) at low temperatures, during which the proportion of surface and subsurface hydrogen varies. The results indicate that the subsurface hydrogen is responsible for the formation of pi-bonded ethylene on hydrogen-covered Pd(111). (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：L600 / L604
页数：5
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