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Acta Phys. -Chim. Sin.  2004, Vol. 20 Issue (04): 428-431    DOI: 10.3866/PKU.WHXB20040421
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Preparation and Catalytic Activity of Au/SnO2 for Low-temperature CO Oxidation
Wang Shu-Rong;Wu Shi-Hua;Shi Juan;Zheng Xiu-Cheng;Huang Wei-Ping
Department of Chemistry, Nankai University, Tianjin 300071
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Abstract  Three Au/SnO2 catalysts with different gold loading were prepared via deposition-precipitation method, and characterized by XRD and UV-Vis. The effects of pH of deposition solution, Au loading and pretreatment condition on the catalytic activity of Au/SnO2 catalysts for low-temperature CO oxidation were investigated. The results showed that (1) the mean Au particle size of Au/SnO2 catalyst prepared at pH=9~10 deposition condition was the smallest among the samples obtained at different deposition pH; (2) the catalytic activity decreased with the increase of Au loading; (3) among the 2%Au/SnO2 catalyst samples calcined at different temperatures in air for 4 h, the catalytic activity of the sample calcined at 473 K was the highest; (4) the catalyst samples pretreated at low temperature in H2 exhibited higher activity, and the activity of the sample obtained at 373 K for 2 h was the highest among all Au/SnO2 samples in this work.

Key wordsAu/SnO2 catalyst      Deposition-precipitation method      Catalytic activity      Low-temperature CO oxidation     
Received: 23 September 2003      Published: 15 April 2004
Corresponding Authors: Wu Shi-Hua     E-mail: jackmxd808@163.com
Cite this article:

Wang Shu-Rong;Wu Shi-Hua;Shi Juan;Zheng Xiu-Cheng;Huang Wei-Ping. Preparation and Catalytic Activity of Au/SnO2 for Low-temperature CO Oxidation. Acta Phys. -Chim. Sin., 2004, 20(04): 428-431.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB20040421     OR     http://www.whxb.pku.edu.cn/Y2004/V20/I04/428

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