The effect of vanadium promotion on activated carbon (AC)-supported cobalt catalysts in Fischer–Tropsch synthesis has been studied by means of XRD, TPR, CO-TPD, H2-TPSR of chemisorbed CO and F-T reaction. It was found that the CO conversion could be significantly increased from 38.9 to 87.4% when 4 wt.% V was added into Co/AC catalyst. Small amount of vanadium promoter could improve the selectivity toward C10–C20 fraction and suppress the formation of light hydrocarbon. The results of CO-TPD and H2-TPSR of adsorbed CO showed that the addition of vanadium increased the concentration of surface-active carbon species by enhancing CO dissociation and further improved the selectivity of long chain hydrocarbons. However, excess of vanadium increased methane selectivity and decreased C5+ selectivity.
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Wang, T., Ding, Y., Xiong, J. et al. Effect of Vanadium Promotion on Activated Carbon-Supported Cobalt Catalysts in Fischer–Tropsch Synthesis. Catal Lett 107, 47–52 (2006). https://doi.org/10.1007/s10562-005-9730-1
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DOI: https://doi.org/10.1007/s10562-005-9730-1