Journal of Inorganic Materials, Volume. 40, Issue 5, 473(2025)

Co-production of Few-layer Graphene and Hydrogen from Methane Pyrolysis Based on Cu and Metal Oxide-KCl Molten Medium

Mingkai YANG1, Zeai HUANG1,2, Yunxiao ZHOU1, Tong LIU1, Kuikui ZHANG1, Hao TAN1, Mengying LIU1, Junjie ZHAN1, Guoxing CHEN3, and Ying ZHOU1,2、*
Author Affiliations
  • 11. School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
  • 22. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China
  • 33. Department of Materials and Earth Sciences, Technical University Darmstadt, Darmstadt 64287, Germany
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    Figures & Tables(16)
    Effects of metal oxides and Cu contents on CH4 conversion rate (a) and hydrogen production yield (b)
    Effects of reaction time on CH4 conversion rate (a) and hydrogen production yield (b)
    Raman spectra of carbon materials produced using xCu/ZrO2 (a) and xCu/MgO (b) catalysts
    SEM images of carbon materials produced using xCu/ZrO2 catalysts
    SEM images of carbon materials produced using xCu/MgO catalysts
    (a-c) TEM images of carbon materials produced using 50%Cu/ZrO2 catalysts; (d) HRTEM image of carbon materials produced using 75%Cu/MgO catalysts
    XRD patterns of carbon materials produced using 50%Cu/MO catalysts
    TG curves of carbon materials produced using 50%Cu/MO catalysts
    Nitrogen adsorption-desorption isotherms (a) and pore size distributions (b) of carbon materials produced using 50%Cu/MO catalysts
    Schematic diagram of the reaction mechanism
    S1 Raman spectra of carbon materials produced using xCu/Al2O3 (a), xCu/TiO2 (b) and xCu/SiO2 (c) catalysts
    S2 SEM images of carbon materials produced using xCu/Al2O3 catalysts
    S3 SEM images of carbon materials produced using xCu/TiO2 catalysts
    S4 SEM images of carbon materials produced using xCu/SiO2 catalysts
    • Table 1. S1 Contents of carbon materials and impurity produced using 50%Cu/MO catalysts

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      Table 1. S1 Contents of carbon materials and impurity produced using 50%Cu/MO catalysts

      SampleCarbon/% (in mass)Impurity/% (in mass)
      50%Cu/SiO243.456.6
      50%Cu/MgO67.532.5
      50%Cu/ZrO252.247.8
      50%Cu/TiO262.237.8
      50%Cu/Al2O380.219.8
    • Table 2. S2 BET data for carbon materials produced using 50%Cu/MO catalysts

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      Table 2. S2 BET data for carbon materials produced using 50%Cu/MO catalysts

      SampleSpecific surface area/(m2·g-1) Pore volume/(cm3·g-1) Average pore diameter/nm
      50%Cu/SiO29.030.0419.75
      50%Cu/MgO11.760.0619.26
      50%Cu/ZrO210.330.0519.76
      50%Cu/TiO213.450.0721.86
      50%Cu/Al2O312.520.0720.78
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    Mingkai YANG, Zeai HUANG, Yunxiao ZHOU, Tong LIU, Kuikui ZHANG, Hao TAN, Mengying LIU, Junjie ZHAN, Guoxing CHEN, Ying ZHOU. Co-production of Few-layer Graphene and Hydrogen from Methane Pyrolysis Based on Cu and Metal Oxide-KCl Molten Medium[J]. Journal of Inorganic Materials, 2025, 40(5): 473

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    Paper Information

    Category:

    Received: Oct. 25, 2024

    Accepted: --

    Published Online: Sep. 2, 2025

    The Author Email: Ying ZHOU (yzhou@swpu.edu.cn)

    DOI:10.15541/jim20240445

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