ACTIVITY ENHANCEMENT OF COPPER-CONTAINING OXIDE CATALYSTS BY ADDITION OF CESIUM IN THE REDUCTION OF NITRIC-OXIDE

被引：60

作者：

UKISU, Y ^{[1
]}

SATO, S ^{[1
]}

MURAMATSU, G ^{[1
]}

YOSHIDA, K ^{[1
]}

机构：

[1] RIKEN CORP,KUMAGAYA,SAITAMA 360,JAPAN

来源：

CATALYSIS LETTERS | 1992年 / 16卷 / 1-2期

关键词：

NITRIC OXIDE; CATALYTIC REDUCTION; PROPYLENE; COPPER; CESIUM; ALUMINA;

D O I：

10.1007/BF00764349

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：

Catalytic reduction of nitric oxide in the presence of propylene and oxygen over alumina and copper-containing oxide catalysts has been studied. The optimum temperature for this reaction is dependent upon the composition of the catalysts: almost-equal-to 640 K on Cu-Cs/Al2O3, almost-equal-to 680 K on Cu/Al2O3, and almost-equal-to 780 K on Al2O3. IR spectroscopic measurements show that an isocyanatc (-NCO) intermediatc formed on Cu-Cs/Al2O3 is more reactive with NO to give N2 than the intermediate produced on Al2O3 and Cu/Al2O3. Electron donation from Cs to Cu may activate the intermediate.

引用

页码：11 / 16

页数：6

共 15 条

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