Effect of vanadium promotion on activated carbon-supported cobalt catalysts in Fischer-Tropsch synthesis
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...
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Published in | Catalysis letters Vol. 107; no. 1-2; pp. 47 - 52 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Dordrecht
Springer
01.02.2006
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | 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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ISSN: | 1011-372X 1572-879X |
DOI: | 10.1007/s10562-005-9730-1 |