Ceria supported on sulfated zirconia as a superacid catalyst for selective catalytic reduction of NO with NH3

被引：85

作者：

Gao, Shan ^{[1
]}

Chen, Xiongbo ^{[1
]}

Wang, Haiqiang ^{[1
]}

Mo, Jiansong ^{[2
]}

Wu, Zhongbiao ^{[1
,2
]}

Liu, Yue ^{[1
]}

Weng, Xiaole ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Environm Engn, Hangzhou 310058, Zhejiang, Peoples R China

[2] Zhejiang Prov Engn Res Ctr Ind Boiler & Furnace F, Hangzhou 310027, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2013年 / 394卷

基金：

中国国家自然科学基金;

关键词：

NO reduction; SCR; Ammonia; Superacid; Ceria; Sulfated zirconia; SOL-GEL; RAMAN-SPECTROSCOPY; OXIDE CATALYSTS; REDOX; PERFORMANCE; ACIDITY; DENO(X); SILICA; STATE;

D O I：

10.1016/j.jcis.2012.12.034

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

In this paper, ceria supported on sulfated zirconia (CeSZ) as a superacid catalyst was synthesized and the resulted performances for selective catalytic reduction (SCR) of NO with NH3 were investigated. Experimental results revealed that the sulfation of zirconia supports could greatly improve the SCR activity of the catalysts. Among the tested samples, the CeSZ catalyst with Ce/Zr mole ratio at 0.095 possessed the highest NO conversion (i.e., 98.6% at ca. 420 degrees C and 180,000 h(-1)). The sulfation had led to a formation of pure tetragonal phase of ZrO2, a well dispersion of CeO2, abundant stable superacid sites, increasing surface area and enrichment of Ce3+ on the surface, all of which were responsible for its excellent performance in SCR of NO with NH3. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：515 / 521

页数：7

共 46 条

[1]

Zr(IV) surface chemical state and acid features of sulphated-zirconia samples [J].

Ardizzone, S ;

Bianchi, CL ;

Signoretto, M .

APPLIED SURFACE SCIENCE, 1998, 136 (03) :213-220

[2]

Influence of sulphate doping on Pd/zirconia based catalysts for the selective catalytic reduction of nitrogen oxides with methane [J].

Bautista, P. ;

Faraldos, M. ;

Yates, M. ;

Bahamonde, A. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 71 (3-4) :254-261

[3]

Surface state of sulfated zirconia: the role of the sol-gel reaction parameters [J].

Bianchi, CL ;

Ardizzone, S ;

Cappelletti, G .

SURFACE AND INTERFACE ANALYSIS, 2004, 36 (08) :745-748

[4]

Chemical and mechanistic aspects of the selective catalytic reduction of NOx by ammonia over oxide catalysts:: A review [J].

Busca, G ;

Lietti, L ;

Ramis, G ;

Berti, F .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 18 (1-2) :1-36

[5]

Enhanced activity of tungsten modified CeO2/TiO2 for selective catalytic reduction of NOx with ammonia [J].

Chen, Liang ;

Li, Junhua ;

Ge, Maofa ;

Zhu, Ronghai .

CATALYSIS TODAY, 2010, 153 (3-4) :77-83

[6]

Effect of pH value on the microstructure and deNOx, catalytic performance of titanate nanotubes loaded CeO2 [J].

Chen, Xiongbo ;

Wang, Haiqiang ;

Gao, Shan ;

Wu, Zhongbiao .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2012, 377 :131-136

[7]

Selective catalytic reduction of NO over carbon nanotubes supported CeO2 [J].

Chen, Xiongbo ;

Gao, Shan ;

Wang, Haiqiang ;

Liu, Yue ;

Wu, Zhongbiao .

CATALYSIS COMMUNICATIONS, 2011, 14 (01) :1-5

[8]

Sulfated zirconia and tungstated zirconia as effective supports for Pd-based SCR catalysts [J].

Chin, YH ;

Alvarez, WE ;

Resasco, DE .

CATALYSIS TODAY, 2000, 62 (2-3) :159-165

[9]

Three-way catalyst emissions control technologies for spark-ignition engines - recent trends and future developments [J].

Collins, Neil R. ;

Twigg, Martyn V. .

TOPICS IN CATALYSIS, 2007, 42-43 (1-4) :323-332

[10]

Study of the surface and redox properties of ceria-zirconia oxides [J].

Darnyanova, S. ;

Pawelec, B. ;

Arishtirova, K. ;

Huerta, M. V. Martinez ;

Fierro, J. L. G. .

APPLIED CATALYSIS A-GENERAL, 2008, 337 (01) :86-96

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