CO ADSORPTION ON PD(111) - THE EFFECTS OF TEMPERATURE AND PRESSURE

被引：226

作者：

KUHN, WK

SZANYI, J

GOODMAN, DW

机构：

[1] Department of Chemistry, Texas A and M University, College Station

来源：

SURFACE SCIENCE | 1992年 / 274卷 / 03期

关键词：

D O I：

10.1016/0039-6028(92)90834-S

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：

Infrared reflection-absorption spectroscopy (IRAS) has been used to study the adsorption of carbon monoxide on a Pd(111) surface. IRAS spectra were collected at temperatures from 100 to 1000 K and at pressures from 1.0 X 10(-7) to 10.0 Torr. The IRAS data at temperatures > 250 K showed the coverage versus temperature behavior anticipated from the data acquired under UHV conditions. However, at temperatures < 250 K, multiple CO adsorption structures were observed which were dependent upon the adsorption temperature and pressure. The low temperature/low pressure adsorption data extrapolate to the high temperature/high pressure regime only if appropriate adsorption conditions are employed.

引用

页码：L611 / L618

页数：8

共 24 条

[1] CHEMISORPTION OF CARBON-MONOXIDE ON PALLADIUM SINGLE-CRYSTAL SURFACES - IR SPECTROSCOPIC EVIDENCE FOR LOCALIZED SITE ADSORPTION [J].