Chinese Journal of Catalysis ›› 2015, Vol. 36 ›› Issue (2): 252-259.DOI: 10.1016/S1872-2067(14)60179-0

• Articles • Previous Articles    

Fischer-Tropsch synthesis: Characterizing and reaction testing of Co2C/SiO2 and Co2C/Al2O3 catalysts

Yanpeng Peia,c, Yunjie Dinga,b, Juan Zanga,c, Xiangen Songa,c, Wenda Donga,c, Hejun Zhua, Tao Wanga, Weimiao Chena   

  1. a Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
    b State Key Laboratory for Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
    c University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-10-24 Revised:2014-11-16 Online:2015-01-21 Published:2015-01-21

Abstract:

SiO2- and Al2O3-supported Co2C catalysts were prepared by carburizing supported Co precursors with CO. The catalysts were characterized by N2 physisorption, X-ray diffraction and H2 temperature-programmed reduction techniques, and evaluated by the Fischer-Tropsch (F-T) reaction. The results showed that SiO2- and Al2O3-supported Co2C catalysts could be successfully obtained but sufficient carburization time was required. All of the as-prepared supported Co2C catalysts exhibited activity and selectivity towards alcohols. It is considered that surface metallic Co species contributed to the activity, surface Co2C species were responsible for the formation of alcohols, and bulk Co2C species were inert during the F-T reaction.

Key words: Supported cobalt carbide, Fischer-Tropsch synthesis, Alcohols, Surface sites