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Citation: Xi Jing-Yu, Lv ng-Xuan, Wang Zhi-Fei. Partial Oxidation of Methanol to Hydrogen over Cu/Zn and Cu/Zn/Ni Catalysts[J]. Acta Physico-Chimica Sinica, ;2001, 17(07): 655-658. doi: 10.3866/PKU.WHXB20010717 shu

Partial Oxidation of Methanol to Hydrogen over Cu/Zn and Cu/Zn/Ni Catalysts

1.
State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Instit ute of Chemical Physics, Chinese Academy of Sciences, Lanzhou　730000

Received Date: 14 November 2000
Available Online: 15 July 2001

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.
- Methanol;Hydrogen;Decomposition;Partial oxidation;Cu/Zn catal yst;　Cu/Zn/Ni catalyst
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