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Acta Physico-Chimica Sinica  2001, Vol. 17 Issue (07): 655-658    DOI: 10.3866/PKU.WHXB20010717
Note     
Partial Oxidation of Methanol to Hydrogen over Cu/Zn and Cu/Zn/Ni Catalysts
Xi Jing-Yu;Lv Gong-Xuan;Wang Zhi-Fei
State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Instit ute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000
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Abstract  Catalytic generation of hydrogen by the coupling of decomposition and partial oxidation of methanol over Cu/Zn and Cu/Zn/Ni catalysts have been studie d. These Cu-Zn based catalysts show high activity and stability for the partial oxidation of methanol. The catalytic activity and selectivity are affected by t he ratio of O2/CH3OH. The optimum reaction conditions for Cu-Zn catalyst are O2 /CH3OH=0.2, T=523 K. The formation of CuZn alloy was observed in the deactivated Cu/Zn catalysts after methanol decomposition at 523 K for 20 h. On the contrary , no CuZn alloy was found in the used Cu/Zn catalyst after partial oxidation of methanol for 150 h at 523 K. The presented results seem to indicate that the for mation of CuZn alloy is one of the main reasons for the deactivation of Cu-Zn b ased catalysts in methanol decomposition.

Key wordsMethanol      Hydrogen      Decomposition      Partial oxidation      Cu/Zn catal yst       Cu/Zn/Ni catalyst     
Received: 14 November 2000      Published: 15 July 2001
Corresponding Authors: Lv Gong-Xuan     E-mail: gxlu@ns.lzb.ac.cn
Cite this article:

Xi Jing-Yu;Lv Gong-Xuan;Wang Zhi-Fei. Partial Oxidation of Methanol to Hydrogen over Cu/Zn and Cu/Zn/Ni Catalysts. Acta Physico-Chimica Sinica, 2001, 17(07): 655-658.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB20010717     OR     http://www.whxb.pku.edu.cn/Y2001/V17/I07/655

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