CO OXIDATION ON PALLADIUM .2. A COMBINED KINETIC-INFRARED REFLECTION-ABSORPTION SPECTROSCOPIC STUDY OF PD(111)

被引：69

作者：

SZANYI, J ^{[1
]}

KUHN, WK ^{[1
]}

GOODMAN, DW ^{[1
]}

机构：

[1] TEXAS A&M UNIV,DEPT CHEM,COLLEGE STN,TX 77843

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1994年 / 98卷 / 11期

关键词：

D O I：

10.1021/j100062a039

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 oxidation of carbon monoxide was studied on a single-crystal Pd(111) catalyst using an elevated pressure IR cell/ultrahigh vacuum surface analysis system. The reaction kinetics were followed at elevated pressures by measuring the total pressure change during the course of reaction. In the temperature range of 500-570 K an apparent activation energy of 28.1 +/- 0.3 kcal/mol was determined, which agrees well with the 25 +/- 2 kcal/mol obtained for the heat of adsorption of CO on Pd(111). Below 500 K the apparent activation energy decreases to 21 kcal/mol in concert with the decrease in the CO heat of adsorption.

引用

页码：2978 / 2981

页数：4

共 25 条

[1] KINETICS OF CO OXIDATION ON SINGLE-CRYSTAL PD, PT, AND IR [J].