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Selective catalytic reduction of NO with ammonia over V2O5 supported sulfated titanium-pillared clay catalysts:: influence of V2O5 content

被引：54
作者：
Boudali, LK
Ghorbel, A
Grange, P
Figueras, F
机构：
[1] Fac Sci Tunis, Dept Chim, Lab Chim Mat & Catalyse, Tunis 1060, Tunisia
[2] Catholic Univ Louvain, Unite Catalyse & Chim Mat Divises, B-1348 Louvain, Belgium
[3] Inst Rech Catalyse, CNRS, F-69626 Villeurbanne, France
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2005年 / 59卷 / 1-2期
关键词：
sulfated Ti-pillared clay; V2O5; SCR of NO by ammonia; acidity;
D O I：
10.1016/j.apcatb.2005.01.007
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 series of V2O5 supported sulfated titanium-pillared clay catalysts with various amounts of vanadia were prepared and characterized by BET, DRX, XPS and NH3-TPD then studied for selective catalytic reduction (SCR) of NO by NH3 in the presence of oxygen. It was found that vanadia supported on sulfated Ti-pillared clay is more active at any temperature than sulfated Ti-pillared clay for the SCR of NO by NH3. The NO conversions over V2O5 supported sulfated Ti-pillared clay catalysts were found to increase with vanadia content, but the selectivity into nitrogen decreases upon sulfation, suggesting that there is an optimum of activity as a function of the number of acid sites. (c) 2005 Elsevier B.V. All rights reserved.
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收藏
页码：105 / 111
页数：7
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