Effect of Vanadium Promotion on Activated Carbon-Supported Cobalt Catalysts in Fischer–Tropsch Synthesis

被引：2
|
作者：
Tao Wang
Yunjie Ding
Jianmin Xiong
Li Yan
Hejun Zhu
Yuan Lu
Liwu Lin
机构：
[1] Natural Gas Utilization and Applied Catalysis Laboratory,State Key Laboratory of catalysis, Dalian Institute of Chemical Physics
[2] Chinese Academy of Sciences,undefined
[3] Graduate School of Chinese Academy of Science,undefined
来源：
Catalysis Letters | 2006年 / 107卷
关键词：
AC-supported Co catalyst; Fischer–Tropsch synthesis; vanadium promotion;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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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页码：47 / 52
页数：5
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