Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (3): 342-350.DOI: 10.1016/S1872-2067(12)60757-8

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Cobalt-based catalysts derived from cobalt carbonyl clusters for Fischer-Tropsch synthesis

Xuefen Lia, Fenghua Baib, Haiquan Sua,b   

  1. a College of Life Sciences, Inner Mongolia University, Hohhot 010021, Inner Mongolia, China;
    b School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, Inner Mongolia, China
  • Received:2013-09-02 Revised:2013-11-22 Online:2014-02-26 Published:2014-02-26
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21061008) and the Key Grant of Inner Mongolia Natural Science Foundation (2010ZD01).

Abstract:

Co catalysts supported on γ-Al2O3 were prepared using Co2(CO)6HCCCOOH, Co3(CO)9CCH2COOH, and Co4(CO)10HCCCOOH as precursors. Co(NO3)2 was used as the precursor for preparing the reference catalyst. The results of Fischer-Tropsch synthesis tests and characterization by transmission electron microscopy, NH3 temperature-programmed desorption, and infrared showed that the different precursors have significant effects on the dispersion of the Co, which affect their catalytic behavior. CO conversion and C5+ selectivity over these catalysts prepared from different precursors decreased in the order Co3(CO)9CCH2COOH > Co2(CO)6HCCCOOH > Co4(CO)10HCCCOOH > Co(NO3)2.

Key words: Cobalt carbonyl cluster, Fischer-Tropsch synthesis, Precursor, Impregnation