Alumina-supported In2O3, Ga2O3 and B2O3 catalysts for lean NOx reduction with dimethyl ether

被引：8
作者：
Erkfeldt, Sara [1 ,2 ]
Petersson, Martin [3 ]
Palmqvist, Anders [2 ]
机构：
[1] Volvo Technol Corp, SE-41288 Gothenburg, Sweden
[2] Chalmers, Competence Ctr Catalysis, Dept Chem & Biol Engn, SE-41296 Gothenburg, Sweden
[3] Volvo Powertrain Corp, Dept 91514, BC2, SE-40508 Gothenburg, Sweden
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2012年 / 117卷
基金：
瑞典研究理事会;
关键词：
Hydrocarbon-SCR; NOx reduction; Alumina; Alternative fuel; Dimethyl ether; Indium; Gallium; Boron; PREPARED GA2O3-AL2O3 CATALYSTS; GALLIUM OXIDE CATALYSTS; ENGINE EXHAUST-GAS; SELECTIVE REDUCTION; GAMMA-ALUMINA; NITRIC-OXIDE; MECHANISTIC ASPECTS; NITROGEN MONOXIDE; EXCESS OXYGEN; DME;
D O I：
10.1016/j.apcatb.2012.01.031
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：
Alumina-supported In2O3, Ga2O3 and B2O3 were investigated as catalysts for lean NOx reduction with DME as reducing agent and compared to pure Al2O3 and In2O3. The In2O3-promoted alumina catalysts showed the highest NOx conversion at low temperatures, although with a narrow temperature window. Pure In2O3, on the other hand, was inactive for NOx reduction with DME. The Ga2O3- and B2O3-promoted alumina catalysts gave the highest NOx conversion at higher temperatures, showed a temperature window similar to pure alumina, but were less sensitive to H2O inhibition. Possible reasons for these observations are discussed. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：369 / 383
页数：15
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