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Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (24): 2523-2528. Previous Articles     Next Articles

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焙烧温度对Cu/ZnO水煤气变换催化剂开停循环性能的影响

刘晓钰，郭平均，周功兵，裴燕，乔明华*，范康年*   

  1. (上海市分子催化和功能材料重点实验室 复旦大学化学系 上海 200433)
  • 投稿日期:2010-03-23 修回日期:2010-07-16 发布日期:2010-08-16
  • 通讯作者: 刘晓钰 E-mail:082022044@fudan.edu.cn
  • 基金资助:

    “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

Cu/ZnO Water-gas Shift Catalysts Calcined at Different Temperatures for Shut-down/Start-up Operation

LIU Xiao-Yu, GUO Ping-Jun, ZHOU Gong-Bing, PEI Yan, QIAO Ming-Hua, FAN Kang-Nian   

  1. (Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433)
  • Received:2010-03-23 Revised:2010-07-16 Published:2010-08-16

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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