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Study on Deactivation of Co/ZrO2/SiO2 Catalyst For Fischer-Tropsch Synthesis

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Abstract

A Co/ZrO2 /SiO2 catalyst active for synthesis of heavy hydrocarbons from syngas was subjected to a stability test of 500 h on a laboratory scale. The catalyst showed a considerable decrease in CO conversion, while the hydrocarbon distribution hardly changed with time on stream. The regeneration of deactivated catalyst with H2 at 673 K partially restored the activity. XRD, FT-IR and TGA identified a hydrated cobalt silicate species in the catalyst near the reactor outlet. Thus, the cause of deactivation was proposed mainly to be the formation of inactive hydrated silicate between Co metal and silica in presence of high partial pressure of water.

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Authors and Affiliations

  1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001

    Jian_Gang Chen, Hong-Wei Xiang, Hai-Yan Gao & Yu-Han Sun

Authors
  1. Jian_Gang Chen
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  2. Hong-Wei Xiang
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  3. Hai-Yan Gao
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  4. Yu-Han Sun
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Correspondence to Yu-Han Sun.

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Chen, J., Xiang, HW., Gao, HY. et al. Study on Deactivation of Co/ZrO2/SiO2 Catalyst For Fischer-Tropsch Synthesis. Reaction Kinetics and Catalysis Letters 73, 169–177 (2001). https://doi.org/10.1023/A:1013909912990

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  • DOI: https://doi.org/10.1023/A:1013909912990

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