Cobalt supported on zirconium doped mesoporous silica:: a selective catalyst for reduction of NO with ammonia at low temperatures

被引：33

作者：

Moreno-Tost, R ^{[1
]}

Santamaría-González, J ^{[1
]}

Maireles-Torres, P ^{[1
]}

Rodríguez-Castellón, E ^{[1
]}

Jiménez-López, A ^{[1
]}

机构：

[1] Univ Malaga, Fac Ciencias, Dept Quim Inorgan Cristalog & Mineral, Malaga 29071, Spain

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2002年 / 38卷 / 01期

关键词：

NOSCR; mesoporous solids; ammonia; zirconium doped silica; cobalt containing catalysts;

D O I：

10.1016/S0926-3373(02)00026-7

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：

A zirconium doped mesoporous silica has been used as a support of cobalt oxide (4-16 wt.% Co), and tested in the selective catalytic reduction (SCR) of NO with ammonia in an excess of oxygen. These catalysts exhibit maximum conversion of NO (88%) at low temperature (200degreesC), with an almost stoichiometric conversion of NH3 and minimal N2O formation. Moreover, the catalytic activity can be correlated to the presence of well dispersed Co2+/Co3+ species, as evidenced by different characterisation techniques, and their capacity to adsorb NO molecules. (C) 2002 Published by Elsevier Science B.V.

引用

页码：51 / 60

页数：10

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