Iron doped lanthanum stannate pyrochlores (La2Sn2-xFexO7) for the simultaneous catalytic removal NOx and soot

被引：3

作者：

Wang, Zhongpeng ^{[1
]}

Wang, Zizi ^{[2
]}

Wang, Xiao ^{[2
]}

Li, Qian ^{[2
]}

Mu, Zonggang ^{[2
]}

Zhang, Zhaoliang ^{[2
]}

机构：

[1] Univ Jinan, Sch Resources & Environm, 106 Jiwei Rd, Jinan 250022, Peoples R China

[2] Univ Jinan, Coll Chem & Chem Engn, Jinan 250022, Peoples R China

来源：

EMERGING FOCUS ON ADVANCED MATERIALS, PTS 1 AND 2 | 2011年 / 306-307卷

基金：

中国国家自然科学基金;

关键词：

Simultaneous removal; NOx; Soot; Lanthanum stannate oxides; Pyrochlore; Iron doping; DIESEL SOOT; MIXED OXIDES; COMBUSTION; PARTICULATE; PERFORMANCE; METHANE; MN;

D O I：

10.4028/www.scientific.net/AMR.306-307.1468

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of La2Sn2-xFexO7 (x=0, 0.2, 0.6, 1.0, 1.4, 1.8, 2.0) catalysts were prepared by a constant pH co-precipitation method, and their catalytic activity was investigated for simultaneous removal of NOx and soot. The incorporation of Fe strongly influences the crystal phase composition, surface area and redox properties of the catalysts. All the catalysts displayed soot oxidation activity with nearly 100% selectivity towards CO2. The doped solids exhibit higher activities than the undoped one, which may be related to the enhancement of reducibility derived from structure defects induced by doping. LSF0.6 may be a good catalyst with high soot oxidation activity (T-i = 334 degrees C) and a high maximum productivity of N-2 (P-N2=12.4%).

引用

页码：1468 / +

页数：2

共 16 条

[1] Catalytic combustion of methane over cobalt doped lanthanum stannate pyrochlore oxide [J].

Cheng, Jie ;

Wang, Hailing ;

Hao, Zhengping ;

Wang, Shaobin .

CATALYSIS COMMUNICATIONS, 2008, 9 (05) :690-695

[2] Catalytic combustion of methane over La2TM0.3Zr1.7O7-δ (TM = Mn, Fe, and Co) pyrochlore oxides [J].

Cheng, Jie ;

Li, Jinjun ;

Ma, Chunyan ;

Hao, Zhengping .

CATALYSIS COMMUNICATIONS, 2009, 10 (08) :1170-1173

[3] La-Li-Cr perovskite catalysts for diesel particulate combustion [J].

Fino, D ;

Russo, N ;

Cauda, E ;

Saracco, G ;

Specchia, V .

CATALYSIS TODAY, 2006, 114 (01) :31-39

[4]

Jiang Z., 2005, Progress in Natural Science, V15, P134

[5] Simultaneous removal of NOx and diesel soot over nanometer Ln-Na-Cu-O perovskite-like complex oxide catalysts [J].

Liu, Jian ;

Zhao, Zhen ;

Xu, Chun-ming ;

Duan, Ai-jun .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 78 (1-2) :61-72

[6]

Roger AC, 1997, STUD SURF SCI CATAL, V107, P293

[7] Simultaneous catalytic removal of NOx and diesel soot particulates over ternary AB(2)O(4) spinel-type oxides [J].

Shangguan, WF ;

Teraoka, Y ;

Kagawa, S .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1996, 8 (02) :217-227

[8] Simultaneous catalytic removal of nitrogen oxides and diesel soot particulate over perovskite-related oxides [J].

Teraoka, Y ;

Nakano, K ;

Shangguan, W ;

Kagawa, S .

CATALYSIS TODAY, 1996, 27 (1-2) :107-113

[9] Direct decomposition of nitric oxide over stannate pyrochlore oxides: relationship between solid-state chemistry and catalytic activity [J].

Teraoka, Y ;

Torigoshi, K ;

Yamaguchi, H ;

Ikeda, T ;

Kagawa, S .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2000, 155 (1-2) :73-80

[10] Progress and future challenges in controlling automotive exhaust gas emissions [J].

Twigg, Martyn V. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 70 (1-4) :2-15

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