Relationship between oxidation states of copper supported on alumina and activities for catalytic combustion of NH3

被引：6

作者：

Ono, Y ^{[1
]}

Wakita, H

Inui, T

机构：

[1] Kyoto Univ, Dept Energy & Hydrocarbon Chem, Grad Sch Engn, Sakyo Ku, Kyoto 6068501, Japan

[2] Matsushita Elect Ind Co Ltd, Human Env Syst Dev Ctr, Moriguchi, Osaka 5708501, Japan

来源：

CATALYSIS LETTERS | 1998年 / 53卷 / 1-2期

关键词：

copper catalyst; combustion of NH3; oxidation state of copper; high-temperature treatment;

D O I：

10.1023/A:1019085217913

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 relationship between the oxidation state of Cu supported on an alumina catalyst (Cu/Al2O3) and the activity for combustion of NH3 was investigated. Combustion of NH3 on the catalyst treated in hydrogen at 800 degrees C occurred at lower temperature than on the catalyst treated in air. It was also much better than Pt and Ph catalysts for the conversion of NH3 to N-2. Characteristics of the catalyst were investigated by XRD, XPS, and the N2O pulse injection method to understand the reason of its high catalytic activity. The reason of the high activity of the catalyst treated in hydrogen at the high temperature was attributed to the lower oxidation state of Cu in the catalyst.

引用

页码：83 / 89

页数：7