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Synthesis and characterization of niobium-promoted cobalt/iron catalysts supported on carbon nanotubes for the hydrogenation of carbon monoxide

Zahra Gholami Noor Asmawati Mohd Zabidi Fatemeh Gholami Mohammadtaghi Vakili

Zahra Gholami, Noor Asmawati Mohd Zabidi, Fatemeh Gholami, Mohammadtaghi Vakili. Synthesis and characterization of niobium-promoted cobalt/iron catalysts supported on carbon nanotubes for the hydrogenation of carbon monoxide[J]. Journal of Fuel Chemistry and Technology, 2016, 44(7): 815-821.
Citation: Zahra Gholami, Noor Asmawati Mohd Zabidi, Fatemeh Gholami, Mohammadtaghi Vakili. Synthesis and characterization of niobium-promoted cobalt/iron catalysts supported on carbon nanotubes for the hydrogenation of carbon monoxide[J]. Journal of Fuel Chemistry and Technology, 2016, 44(7): 815-821.

基金项目: 

The project was supprted by Short Term Internal Research Fund Universiti Teknologi PETRONAS 0153AA-D06

详细信息
  • 中图分类号: O643

Synthesis and characterization of niobium-promoted cobalt/iron catalysts supported on carbon nanotubes for the hydrogenation of carbon monoxide

Funds: 

The project was supprted by Short Term Internal Research Fund Universiti Teknologi PETRONAS 0153AA-D06

More Information
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  • Figure  1  FESEM images at magnification of ×105

    (a): CNT; (b): Co/CNT; (c): 70Co:30Fe/CNT; (d): 1Nb-70Co:30Fe/CNT

    Figure  2  EDX spectra of (a) Co/CNT, (b) 70Co:30Fe/CNT and (c) 1Nb-70Co:30Fe/CNT

    Figure  3  TEM images of the (a) CNT, (b) 70Co:30Fe/CNT and (c) 1Nb-70Co:30Fe/CNT catalysts

    Figure  4  Size distribution of the particles for 70Co:30Fe/CNTs and 1Nb-70Co:30Fe/CNTs catalysts based on TEM images

    Figure  5  XPS Co 2p spectra of Co of the (a) 70Co:30Fe/CNT and (b) 1Nb-70Co:30Fe/CNT catalysts

    Figure  6  XPS Co 2p spectra of Co of the (a) 70Co:30Fe/CNT and (b) 1Nb-70Co:30Fe/CNT catalysts

    Figure  7  H2-TPR profiles of (a) Co/CNT, (b) Fe/CNT, (c) 70Co:30Fe/CNT, (d) 1Nb-70Co:30Fe/CNT catalysts and (e) CNTs

    Figure  8  Effect of H2:CO volume ratio on the (a) CO conversion and (b) product distribution over 70Co:30Fe/CNT catalyst

    Table  1  XPS analysis of 70Co:30Fe/CNT and 1Nb-70Co:30Fe/CNT catalysts

    Catalyst XPS binding energy E/eV Co2+/Co3+(atomic ratio) ΔECo
    Co 2 p1/2 Co 2 p3/2
    70Co:30Fe/CNT 795.7 780.2 0.46 15.5
    1Nb-70Co:30Fe/CNT 794.6 779.0 0.64 15.6
    下载: 导出CSV

    Table  2  Catalytic activity and products selectivity of catalysts

    Catalyst CO conversion x/% CO2 selectivity s/% Product selectivity s/% Olefin/Paraffin
    C1 C2-4 C5+
    Co/CNT 3.0 0.026 80.1 7.1 2.8 0.01
    Fe/CNT 2.8 0.025 85.6 13.3 1.5 0.05
    70Co30Fe/CNT 3.7 0.026 83.8 12.9 3.3 0.02
    1Nb-70Co30Fe/CNT 4.7 0.025 78.1 18.1 3.8 0.04
    260 ℃, 1 MPa, H2:CO (volume ratio)=2, SV=51 and 7 h
    下载: 导出CSV
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出版历程
  • 收稿日期:  2016-03-11
  • 修回日期:  2016-05-05
  • 网络出版日期:  2021-01-23
  • 刊出日期:  2016-07-10

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