Effect of transition metal oxide additives on the activity of an Ag/SiO2 catalyst in carbon monoxide oxidation

被引：30

作者：

Mamontov, G. V. ^{[1
]}

Dutov, V. V. ^{[1
]}

Sobolev, V. I. ^{[2
]}

Vodyankina, O. V. ^{[1
]}

机构：

[1] Tomsk State Univ, Tomsk 634050, Russia

[2] Russian Acad Sci, Boreskov Inst Catalysis, Siberian Branch, Novosibirsk 630090, Russia

来源：

KINETICS AND CATALYSIS | 2013年 / 54卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

SILVER; CERIA; GOLD; CO;

D O I：

10.1134/S0023158413040137

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 catalysts of silver supported on mesoporous silica modified with Co3O4, CeO2, and ZrO2 were prepared by an impregnation method; characterized by X-ray diffraction analysis, temperature-programmed reduction, and low-temperature nitrogen adsorption; and studied in a model reaction of CO oxidation. It was found that the Ag/SiO2 system exhibited high activity in the reaction of CO oxidation, and the addition of transition metal oxides led to reduction of the temperature of 50% CO conversion by 40A degrees C. The modification of Ag/SiO2 with cerium dioxide was found most effective because of the interaction of silver particles and CeO2 on the surface of silica gel.

引用

页码：487 / 491

页数：5

共 16 条

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