SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2024, Vol. 76 ›› Issue (12): 281-291.DOI: 10.1016/j.cjche.2024.07.025

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Effect of cobalt on the activity of nickel-based/magnesium-substituted hydroxyapatite catalysts for dry reforming of methane

Tongming Su1, Bo Gong1, Xinling Xie1, Xuan Luo1, Zuzeng Qin1, Hongbing Ji1,2   

  1. 1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;
    2. Zhejiang Green Petrochemical and Light Hydrocarbon Transformation Research Institute, Zhejiang University of Technology, Hangzhou 310014, China
  • 收稿日期:2024-04-14 修回日期:2024-07-21 接受日期:2024-07-22 出版日期:2024-12-28 发布日期:2024-09-28
  • 通讯作者: Zuzeng Qin,E-mail:qinzuzeng@gxu.edu.cn
  • 基金资助:
    This work was supported by the Guangxi Natural Science Foundation (2020GXNSFDA297007), the National Natural Science Foundation of China (22078074), and the Special Funding for ‘Guangxi Bagui Scholars’.

Effect of cobalt on the activity of nickel-based/magnesium-substituted hydroxyapatite catalysts for dry reforming of methane

Tongming Su1, Bo Gong1, Xinling Xie1, Xuan Luo1, Zuzeng Qin1, Hongbing Ji1,2   

  1. 1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;
    2. Zhejiang Green Petrochemical and Light Hydrocarbon Transformation Research Institute, Zhejiang University of Technology, Hangzhou 310014, China
  • Received:2024-04-14 Revised:2024-07-21 Accepted:2024-07-22 Online:2024-12-28 Published:2024-09-28
  • Contact: Zuzeng Qin,E-mail:qinzuzeng@gxu.edu.cn
  • Supported by:
    This work was supported by the Guangxi Natural Science Foundation (2020GXNSFDA297007), the National Natural Science Foundation of China (22078074), and the Special Funding for ‘Guangxi Bagui Scholars’.

摘要: The dry reforming of methane (DRM) reaction can directly convert methane (CH4) and carbon dioxide (CO2) into syngas (H2+CO), which is a promising method for achieving carbon neutralization. In this study, a series of 3Ni-xCo/Mg1HAP alloy catalysts with different ratio were synthesized by the coprecipitation method, and the optimum Ni-Co ratio for the DRM reaction was studied. A series of characterization methods revealed that after Co was added, the formation of Ni-Co alloys increased the interactions between metals. However, an excess of Co inhibits the entry of Ni into the lattice of Mg1HAP, resulting in metal accumulation on the surface of the support. In addition, the introduction of Co improves the dispersion of Ni metal, which endows the catalyst with better catalytic activity and stability. Raman spectroscopy of the catalyst after the stability test showed that the addition of Co reduced the proportion of graphitic carbon, which was also the main reason for its improved stability.

关键词: Methane, Carbon dioxide, Hydroxyapatite, Nickel, Cobalt

Abstract: The dry reforming of methane (DRM) reaction can directly convert methane (CH4) and carbon dioxide (CO2) into syngas (H2+CO), which is a promising method for achieving carbon neutralization. In this study, a series of 3Ni-xCo/Mg1HAP alloy catalysts with different ratio were synthesized by the coprecipitation method, and the optimum Ni-Co ratio for the DRM reaction was studied. A series of characterization methods revealed that after Co was added, the formation of Ni-Co alloys increased the interactions between metals. However, an excess of Co inhibits the entry of Ni into the lattice of Mg1HAP, resulting in metal accumulation on the surface of the support. In addition, the introduction of Co improves the dispersion of Ni metal, which endows the catalyst with better catalytic activity and stability. Raman spectroscopy of the catalyst after the stability test showed that the addition of Co reduced the proportion of graphitic carbon, which was also the main reason for its improved stability.

Key words: Methane, Carbon dioxide, Hydroxyapatite, Nickel, Cobalt