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

[31] Ceria modified MnOx/TiO2 as a superior catalyst for NO reduction with NH3 at low-temperature [J].

Wu, Zhongbiao ;

Jin, Ruiben ;

Liu, Yue ;

Wang, Haiqiang .

CATALYSIS COMMUNICATIONS, 2008, 9 (13) :2217-2220

[32] DRIFT study of manganese/titania-based catalysts for low-temperature selective catalytic reduction of NO with NH3 [J].

Wu, Zhongbiao ;

Jiang, Boqiong ;

Liu, Yue ;

Wang, Haiqiang ;

Jin, Ruiben .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2007, 41 (16) :5812-5817

[33] Study on purification and tip-opening of CNTs fabricated by CVD [J].

Zhao, Naiqin ;

He, Chunnian ;

Li, Jiajun ;

Jiang, Zhaoyang ;

Li, Yongdan .

MATERIALS RESEARCH BULLETIN, 2006, 41 (12) :2204-2209

[34] Adsorption and Oxidation of NH3 and NO over Sol-Gel-Derived CuO-CeO2-MnOx/γ-Al2O3 Catalysts [J].

Zhao, Qingsen ;

Xiang, Jun ;

Sun, Lushi ;

Su, Sheng ;

Hu, Song .

ENERGY & FUELS, 2009, 23 (3-4) :1539-1544

[35] Mechanism of SO2 promotion for NO reduction with NH3 over activated carbon-supported vanadium oxide catalyst [J].

Zhu, ZP ;

Liu, ZY ;

Niu, HX ;

Liu, SJ ;

Hu, TD ;

Liu, T ;

Xie, YN .

JOURNAL OF CATALYSIS, 2001, 197 (01) :6-16

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