A TPD STUDY OF H-2 ON RU/SIO2 AND RU-CU/SIO2

被引：3
|
作者：
JIN, T
JO, SK
WHITE, JM
机构：
[1] Center for Materials Chemistry, Department of Chemistry, The University of Texas at Austin, Austin, 78712, Texas
来源：
CATALYSIS LETTERS | 1990年 / 5卷 / 02期
关键词：
Auger Electron Spectroscopy (AES); supported metal catalysts Ru/SiO[!sub]2[!/sub] and Ru-Cu/SiO[!sub]2[!/sub; Temperature Programmed Desorption (TPD);
D O I：
10.1007/BF00763956
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：
In H2 TPD from Ru/SiO2, two desorption peaks were observed. Both exchanged H for D in sequential dosing experiments. These hydrogen adsorption states were also found for Ru-Cu/SiO2, along with another, higher temperature state at 400-500 K. This last state was neither exchangeable with nor replaceable by deuterium subsequently dosed at 150 K. The three chemisorption states are attributed to hydrogen held at the interface between Ru and SiO2 (< 300 K), adsorbed on Ru particles (310-380 K), and held at the Ru-Cu interface (> 400 K). © 1990 J.C. Baltzer A.G. Scientific Publishing Company.
引用
收藏
页码：217 / 228
页数：12
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