Microwave-irradiation Promoted Cu/ZnO/Al2O3 Catalyst for Hydrogen Production from Steam Reforming of Methanol

Abstract

Abstract: We demonstrate for the first time that a short time of microwave irradiation on the oxide precursor of a Cu/ZnO/Al₂O₃ catalyst can provide unique opportunity for tailoring the microstructure and activity of the catalyst for methanol steam reforming. It is shown by in situ XRD that a considerable increase in the microstrain of Cu nanocrystals could be achieved in the catalysts processed by microwave irradiation for 3₁0 min, which correlates well with the enhanced CH₃OH conversion as observed on the corresponding samples. The present work also confirms that although the high specific surface area of Cu is a prerequisite for catalytic activity, it does not account for the observed changes in activity and selectivity alone without taking bulk microstructural changes into account.

Key words: Steam reforming of methanol, Cu/ZnO/Al2O₃ catalysts, Microwave irradiation, Microstrain, In situ XRD

CLC Number:

O641

TrendMD:

ZHANG Xin-Rong, YAO Cheng-Zhang, WANG Lu-Cun, CAO Yong, WU Dong, SUN Yu-Han, DAI Wei-Lin, FAN Kang-Nian. Microwave-irradiation Promoted Cu/ZnO/Al₂O₃ Catalyst for Hydrogen Production from Steam Reforming of Methanol[J]. Chem. J. Chinese Universities, 2005, 26(6): 1137.

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Microwave-irradiation Promoted Cu/ZnO/Al₂O₃ Catalyst for Hydrogen Production from Steam Reforming of Methanol

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