Selective reduction of nitric oxide by methanol and dimethyl ether over promoted alumina catalysts in excess oxygen

被引：39
|
作者：
Masters, SG [1 ]
Chadwick, D [1 ]
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn & Chem Technol, London SW7 2BY, England
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 1999年 / 23卷 / 04期
关键词：
NOx; methanol (MeOH); dimethyl ether (DME); molybdena/gamma-alumina; vanadia/gamma-alumina; SO2;
D O I：
10.1016/S0926-3373(99)00081-8
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：
Selective catalytic reduction (SCR) activity for NO conversion to N-2 over gamma-alumina, vanadia/alumina and molybdena/ alumina catalysts has been investigated with methanol (MeOH) and dimethyl ether (DME) as reductants under lean conditions. Molybdena/alumina catalysts showed high efficiency for NO reduction with either reductant, especially at low temperature, which may involve surface formyl produced by oxidative dehydrogenation. Sulphated gamma-alumina remains active for NO reduction with MeOH, while sulphated 5 wt.% MoO3/Al2O3 remains active with both MeOH and DME over a broad temperature range. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：235 / 246
页数：12
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