Selective catalytic reduction of NOx with ammonia over Mn-Ce-Ox/TiO2-carbon nanotube composites

被引：78
|
作者：
Fan, Xiaoyu [1 ]
Qiu, Famin [1 ]
Yang, Hangsheng [1 ]
Tian, Wei [1 ]
Hou, Tianfeng [1 ]
Zhang, Xiaobin [1 ]
机构：
[1] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2011年 / 12卷 / 14期
关键词：
De-NOx; Manganese oxide; Ceria; Carbon nanotubes; SO2; LOW-TEMPERATURE SCR; MIXED-OXIDE CATALYSTS; NITRIC-OXIDE; CARBON NANOTUBES; MANGANESE OXIDES; MN-CE/TIO2; CATALYST; SUPERIOR CATALYST; NH3; ADSORPTION; IRON;
D O I：
10.1016/j.catcom.2011.05.011
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：
Mn-Ce-O-x catalysts loaded on TiO2-carbonaceous materials were prepared by sol-gel method. Selective catalytic reduction of NOx was conducted in a fixed-bed flow-reactor over catalysts coated on aluminum plates. A de-NOx efficiency of more than 90% was obtained over the Mn-Ce-O-x/TiO2-carbon nanotubes (CNTs) catalyst between 75 degrees C and 225 degrees C under a gas hourly space velocity (GHSV) of similar to 36,000 h(-1). This activity improvement is attributed to the increase of the BET surface area, and the occurrence of reaction between adsorbed NOx and NH3. Moreover, the de-NOx efficiency was increased to 99.6% by adding 250 ppm SO2 between 100 degrees C and 250 degrees C. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1298 / 1301
页数：4
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