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Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (24): 2523-2528. Previous Articles Next Articles
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刘晓钰,郭平均,周功兵,裴燕,乔明华*,范康年*
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“973”国家重点基础研究发展规划资助项目;教育部新世纪优秀人才支持计划资助项目;国家自然科学基金;霍英东教育基金会资助项目;上海市科委资助项目
LIU Xiao-Yu, GUO Ping-Jun, ZHOU Gong-Bing, PEI Yan, QIAO Ming-Hua, FAN Kang-Nian
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Cu/ZnO catalysts with a Cu/Zn molar ratio of 1∶1 were prepared by the coprecipitation method. The effect of the calcination temperature in the range of 350~550 ℃ was investigated in static state and cyclic shut-down/start-up water-gas shift (WGS) reactions. The Cu/ZnO catalyst calcined at 350 ℃ exhibited the highest activity in the static state operation, and the reaction rate in terms of CO amounted to 2080 cm3•gcat-1•h-1. In the shut-down/start-up operation, these catalysts showed better stability than CeO2-supported noble metal catalysts reported in the literature. Moreover, the CO conversion on the Cu/ZnO catalyst calcined at 550 ℃ was enhanced substantially after one shut-down/start-up cycle.
Key words: water-gas shift, Cu/ZnO catalyst, calcination temperature, shut-down/start-up cycle
LIU Xiao-Yu, GUO Ping-Jun, ZHOU Gong-Bing, PEI Yan, QIAO Ming-Hua, FAN Kang-Nian. Cu/ZnO Water-gas Shift Catalysts Calcined at Different Temperatures for Shut-down/Start-up Operation[J]. Acta Chimica Sinica, 2010, 68(24): 2523-2528.
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