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Pretreating Co/SiO2 to generate highly active Fischer-Tropsch synthesis catalyst with low CH4 selectivity

MU Shi-fang SHANG Ru-jing ZHANG Jian-li CHEN Jian-gang

MU Shi-fang, SHANG Ru-jing, ZHANG Jian-li, CHEN Jian-gang. Pretreating Co/SiO2 to generate highly active Fischer-Tropsch synthesis catalyst with low CH4 selectivity[J]. Journal of Fuel Chemistry and Technology. doi: 10.1016/S1872-5813(21)60163-9
Citation: MU Shi-fang, SHANG Ru-jing, ZHANG Jian-li, CHEN Jian-gang. Pretreating Co/SiO2 to generate highly active Fischer-Tropsch synthesis catalyst with low CH4 selectivity[J]. Journal of Fuel Chemistry and Technology. doi: 10.1016/S1872-5813(21)60163-9

doi: 10.1016/S1872-5813(21)60163-9
详细信息
  • 中图分类号: O643. 36

Pretreating Co/SiO2 to generate highly active Fischer-Tropsch synthesis catalyst with low CH4 selectivity

Funds: This project was supported by the Foundation of State Key Laboratory of Coal Conversion (J20-21-612), the Initiation Foundation of Henan Polytechnic University (B2019-54) and Henan Key Laboratory of Coal Green Conversion (CGCF201910).
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  • Figure  1  TEM ((a), (c)) and HRTEM ((b), (d)) images of the catalysts: (a), (b): Co3O4/SiO2; (c), (d): Co/SiO2-R

    Figure  2  XRD patterns of the catalysts

    Figure  3  XPS spectra of the Co 2p level for catalysts

    Figure  4  TPR profiles of the catalysts

    Table  1  The physico-chemical properties of the catalysts

    CatalystSBET/(m2·g−1)TPVa/(cm3·g−1)Pore diameter/nmCrystallite size b/nmDispersionc/%Reductiond/%
    Co3O4/SiO2153.60.616.716.35.978.2
    Co/SiO2-DR157.70.820.511.38.580.5
    Co/SiO2-R16.50.819.19.110.685.6
    Co/SiO2-ROR157.00.716.711.98.182.1
    a: total pore volume; b: metallic cobalt crystallite size calculated from the formula: dnm = 96/D(%); c: cobalt metal dispersion from H2-TPD; d: calculated from TG results
    下载: 导出CSV

    Table  2  Data from XPS characterization of the catalysts

    CatalystCo 2p3/2/eVCo 2p1/2/eVE/eVn(Co/Si) ratio (theoretical value)ICo 2p/ISi 2p in the samples
    Co3O4/SiO2780.5795.515.00.190.08
    Co/SiO2-DR780.8796.115.30.190.10
    Co/SiO2-R780.4795.515.10.190.13
    Co/SiO2-ROR780.7795.915.20.190.11
    下载: 导出CSV

    Table  3  Catalytic performance of the catalysts

    CatalystCO conv./%${\rm{C}}_{5}^ {+} $ STY/(g·mL−1·h−1)Hydrocarbon distribution w/%
    C1C2−4${\rm{C}}_{5}^ {+} $C5−11C12−18${\rm{C}}_{{18}}^ {+} $
    Co3O4/SiO220.60.0222.46.571.115.927.527.7
    Co/SiO2-DR43.50.0317.75.976.419.525.131.8
    Co/SiO2-R42.30.086.01.992.021.031.839.2
    Co/SiO2-ROR44.10.0314.85.180.121.626.532.1
    Reaction conditions: T = 483 K; p = 2.0 MPa; H2/CO = 2.0; GHSV = 1000 h−1
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-05-21
  • 修回日期:  2021-06-17
  • 网络出版日期:  2021-09-20

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