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Citation: HAN Jian-kang, JIA Li-tao, HOU Bo, LI De-bao, LIU Yan, LIU Ya-chun. Catalytic properties of CoAl2O4/Al2O3 supported cobalt catalysts for Fischer-Tropsch synthesis[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(7): 846-851. shu

Catalytic properties of CoAl2O4/Al2O3 supported cobalt catalysts for Fischer-Tropsch synthesis

  • 1.

    1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;

  • Corresponding author: JIA Li-tao, 
  • Received Date: 13 March 2015
    Available Online: 10 May 2015

  • The γ-Al2O3 modified with CoAl2O4 by the impregnation method was used as support to prepare cobalt catalysts. The physicochemical properties of the prepared catalysts were characterized with BET, XRD, H2-TPR and XPS techniques and H2-chemisorption experiment. The catalytic properties of the prepared catalysts were investigated for Fischer-Tropsch synthesis. It was shown that CoAl2O4 existed on the surface of γ-Al2O3, and thus, effectively weakening the interaction of Co and Al2O3 and resulting in a great increase in the reduction degree and the catalytic activity. The sample with a CoAl2O4 content of 20% shows the highest catalytic activity. It is worth noting that the CoAl2O4 modification decreased the CH4 selectivity but enhanced the C5+ selectivity and catalytic stability.
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