共 41 条
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.
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页码:26 / 34
页数:9
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