Mesoporous CuO-Fe2O3 composite catalysts for low-temperature carbon monoxide oxidation

被引:195
作者
Cao, Jian-Liang [1 ]
Wang, Yan [1 ]
Yu, Xiu-Ling [1 ]
Wang, Shu-Rong [1 ]
Wu, Shi-Hua [1 ]
Yuan, Zhong-Yong [1 ]
机构
[1] Nankai Univ, Coll Chem, Tianjin 300071, Peoples R China
基金
中国国家自然科学基金;
关键词
CuO-Fe2O3; catalyst; mesoporous; CO oxidation; catalytic activity;
D O I
10.1016/j.apcatb.2007.10.005
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
A series of mesoporous CuO-Fe2O3 composite oxide catalysts with different CuO contents were prepared by a surfactant-assisted method of nanoparticle assembly. The prepared composite oxides were characterized by X-ray diffraction, N-2 adsorption, transmission electron microscopy, hydrogen temperature-programmed reduction, thermogravimetry-differential thermal analysis and X-ray photoelectron spectroscopy. Their catalytic behavior for low-temperature CO oxidation was studied by using a microreactor-GC system. These mesoporous CuO-Fe2O3 catalysts possess a wormhole-like mesostructure with a narrow pore size distribution and high surface area, exhibiting high catalytic activity and stability for low-temperature CO oxidation. The catalytic behavior depended on the CuO content, the precalcination temperature, the surface area and the particle size of the catalysts. The catalyst with 15 mol% CuO content and calcined at 300 degrees C exhibited the highest catalytic activity and stability. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:26 / 34
页数:9
相关论文
共 41 条
[1]   Au/ZnO and Au/Fe2O3 catalysts for CO oxidation at ambient temperature:: comments on the effect of synthesis conditions on the preparation of high activity catalysts prepared by coprecipitation [J].
Al-Sayari, Saleh ;
Carley, Albert F. ;
Taylor, Stuart H. ;
Hutchings, Graham J. .
TOPICS IN CATALYSIS, 2007, 44 (1-2) :123-128
[2]   Selective CO oxidation over CuO-CeO2 catalysts prepared via the urea-nitrate combustion method [J].
Avgouropoulos, G ;
Ioannides, T .
APPLIED CATALYSIS A-GENERAL, 2003, 244 (01) :155-167
[3]   Preparation, reduction, and CO chemisorption properties of cyanide-derived CuxFe/Al2O3 catalysts [J].
Boellaard, E ;
van de Scheur, FT ;
van der Kraan, AM ;
Geus, JW .
APPLIED CATALYSIS A-GENERAL, 1998, 171 (02) :333-350
[4]   Preparation, characterization and catalytic behavior of nanostructured mesoporous CuO/Ce0.8Zr0.2O2 catalysts for low-temperature CO oxidation [J].
Cao, Jian-Liang ;
Wang, Yan ;
Zhang, Tong-Ying ;
Wu, Shi-Hua ;
Yuan, Zhong-Yong .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 78 (1-2) :120-128
[5]   XPS characterization of xα-Fe2O3-(1-x)ZrO2 for oxygen gas sensing application [J].
Cao, W ;
Tan, OK ;
Pan, JS ;
Zhu, W ;
Reddy, CVG .
MATERIALS CHEMISTRY AND PHYSICS, 2002, 75 (1-3) :67-70
[6]   α-Fe2O3 nanotubes in gas sensor and lithium-ion battery applications [J].
Chen, J ;
Xu, LN ;
Li, WY ;
Gou, XL .
ADVANCED MATERIALS, 2005, 17 (05) :582-+
[7]   Low-temperature CO oxidation over CuO/Fe2O3 catalysts [J].
Cheng, Tao ;
Fang, Zhiyong ;
Hu, Qixiu ;
Han, Kaidong ;
Yang, Xiaozhi ;
Zhang, Youjin .
CATALYSIS COMMUNICATIONS, 2007, 8 (07) :1167-1171
[8]   Systematic XPS studies of metal oxides, hydroxides and peroxides [J].
Dupin, JC ;
Gonbeau, D ;
Vinatier, P ;
Levasseur, A .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2000, 2 (06) :1319-1324
[9]   Effect of Li2O and CoO-doping of CuO/Fe2O3 system on its surface and catalytic properties [J].
El-Shobaky, H. G. ;
Mokhtar, M. M. .
APPLIED SURFACE SCIENCE, 2007, 253 (24) :9407-9413
[10]   Cordierite as catalyst support for nanocrystalline CuO/Fe2O3 system [J].
El-Shobaky, H. G. ;
Fahmy, Y. M. .
MATERIALS RESEARCH BULLETIN, 2006, 41 (09) :1701-1713