CARBON-MONOXIDE OXIDATION ON RH(111) - VELOCITY AND ANGULAR-DISTRIBUTIONS OF THE CO2 PRODUCT

被引：43

作者：

COLONELL, JI ^{[1
]}

GIBSON, KD ^{[1
]}

SIBENER, SJ ^{[1
]}

机构：

[1] UNIV CHICAGO,DEPT CHEM,CHICAGO,IL 60637

来源：

JOURNAL OF CHEMICAL PHYSICS | 1995年 / 103卷 / 15期

关键词：

D O I：

10.1063/1.470398

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 velocity and angular distributions of CO2 produced by CO oxidation on Rh(111) have been measured as a function of surface temperature and oxygen coverage. Both the velocity and angular distributions are bimodal. The velocities of one component are well fit by a Maxwell-Boltzmann distribution at the surface temperature, and the angular distribution of its intensity is cosine. The second component is non-Boltzmann, and the angular distribution is sharply peaked toward normal. The average energy of this feature is a very strong function of the surface temperature, increasing with a slope of 8.7k(b), where k(b) is the Boltzmann constant, between 475 K and 700 K. Surprisal analysis proves useful in condensing and interpreting these data. (C) 1995 American Institute of Physics.

引用

页码：6677 / 6690

页数：14

共 57 条

[1] FAST REACTION-PRODUCTS FROM THE OXIDATION OF CO ON PT(111) - ANGULAR AND VELOCITY DISTRIBUTIONS OF THE CO2 PRODUCT MOLECULES [J].