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Citation: 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[J]. Acta Physico-Chimica Sinica, ;2004, 20(04): 428-431. doi: 10.3866/PKU.WHXB20040421 shu

Preparation and Catalytic Activity of Au/SnO₂ for Low-temperature CO Oxidation

1.
Department of Chemistry, Nankai University, Tianjin　300071

Received Date: 23 September 2003
Available Online: 15 April 2004

Three Au/SnO2 catalysts with different ld 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.
- Au/SnO₂ catalyst;Deposition-precipitation method;Catalytic activity;Low-temperature CO oxidation
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沈阳化工大学材料科学与工程学院沈阳 110142

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Preparation and Catalytic Activity of Au/SnO2 for Low-temperature CO Oxidation

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通讯作者: 陈斌, bchen63@163.com

Preparation and Catalytic Activity of Au/SnO₂ for Low-temperature CO Oxidation