Catalytic properties of CoAl2O4/Al2O3 supported cobalt catalysts for Fischer-Tropsch synthesis

HAN Jian-kang; JIA Li-tao; HOU Bo; LI De-bao; LIU Yan; LIU Ya-chun

Volume 43 Issue 07

Jul. 2015

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Article Navigation > Journal of Fuel Chemistry and Technology > 2015 > 43(07): 846-851

HAN Jian-kang, JIA Li-tao, HOU Bo, LI De-bao, LIU Yan, LIU Ya-chun. Catalytic properties of CoAl2O4/Al2O3 supported cobalt catalysts for Fischer-Tropsch synthesis[J]. Journal of Fuel Chemistry and Technology, 2015, 43(07): 846-851.

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HAN Jian-kang, JIA Li-tao, HOU Bo, LI De-bao, LIU Yan, LIU Ya-chun. Catalytic properties of CoAl₂O₄/Al₂O₃ supported cobalt catalysts for Fischer-Tropsch synthesis[J]. Journal of Fuel Chemistry and Technology, 2015, 43(07): 846-851.

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Catalytic properties of CoAl₂O₄/Al₂O₃ supported cobalt catalysts for Fischer-Tropsch synthesis

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2015-03-13
Rev Recd Date: 2015-05-10
Publish Date: 2015-07-30

Abstract

Abstract

The γ-Al₂O₃ modified with CoAl₂O₄ by the impregnation method was used as support to prepare cobalt catalysts. The physicochemical properties of the prepared catalysts were characterized with BET, XRD, H₂-TPR and XPS techniques and H₂-chemisorption experiment. The catalytic properties of the prepared catalysts were investigated for Fischer-Tropsch synthesis. It was shown that CoAl₂O₄ existed on the surface of γ-Al₂O₃, and thus, effectively weakening the interaction of Co and Al₂O₃ and resulting in a great increase in the reduction degree and the catalytic activity. The sample with a CoAl₂O₄ content of 20% shows the highest catalytic activity. It is worth noting that the CoAl₂O₄ modification decreased the CH₄ selectivity but enhanced the C₅₊ selectivity and catalytic stability.
- Fischer-Tropsch synthesis,
- cobalt-based catalyst,
- modified Al₂O₃,
- CoAl₂O₄

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References

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