TEMPERATURE PROGRAMMED DESORPTION WITH REACTION

被引：16

作者：

GORTE, R

SCHMIDT, LD

机构：

[1] Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis

来源：

APPLICATIONS OF SURFACE SCIENCE | 1979年 / 3卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0378-5963(79)90007-2

中图分类号：

学科分类号：

摘要：

Temperature programmed desorption kinetics have been studied numerically for the situation where the desorbing species has an appreciable surface reaction rate during desorption. Both noncompetitive and competitive adsorption models are studied, and a method of obtaining the rate constant for the surface reaction by varying the heating rate is described. Product desorption peaks are found to shift to higher temperatures and are narrower than would be predicted by their desorption parameters alone. Product desorption curves also tail off more slowly, making first-order peaks appear symmetric and second-order peaks asymmetric. Product peaks can also shift to higher temperature with increasing coverage for competitive adsorption. Literature data for NO on Pt is compared to the model for peak shape and peak temperature. © 1979.

引用

页码：381 / 389

页数：9

共 12 条

[1] PHOTOELECTRON-SPECTROSCOPY OF NO ADSORBED ON PT(100) [J].