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

页码：1298 / 1301

页数：4

共 35 条

[1] Structure and redox properties of bulk and supported manganese oxide catalysts [J].

Arena, F ;

Torre, T ;

Raimondo, C ;

Parmaliana, A .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2001, 3 (10) :1911-1917

[2] Systematic investigation of supported transition metal oxide based formulations for the catalytic oxidative elimination of (chloro)-aromatics -: Part I:: Identification of the optimal main active phases and supports [J].

Bertinchamps, F. ;

Grégoire, C. ;

Gaigneaux, E. M. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 66 (1-2) :1-9

[3]

Bosch H, 1992, APPL CATAL B-ENVIRON, V1, P221

[4]

Bosch H., 1988, Catalysis Today, V2, P369, DOI [DOI 10.1016/0920-5861(88)80002-6, 10.1016/B978-0-444-98919-2.50005-3, DOI 10.1016/B978-0-444-98919-2.50005-3]

[5] Mn-Ce/ZSM5 as a new superior catalyst for NO reduction with NH3 [J].