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Abstract— <p>With the aim of achieving high-performance catalysts for CO<sub>2</sub> hydrogenation to CH<sub>4</sub>, a highly efficient, stable and mesoporous Ce-Ni/KCC-1 catalyst was developed, and the effects of Ce doping on the morphology, structure and CO<sub>2</sub> hydrogenation performance of the catalysts were investigated. The results demonstrated that the doping of Ce could reduce the particle size of Ni active components, advance the dispersion of metallic Ni and increase the number of alkaline sites, thereby promoting the catalytic activity of the modified catalyst. Obviously, the catalyst 7Ce-10Ni/KCC-1 achieved a CH<sub>4</sub> selectivity of 98% and a CO<sub>2</sub> conversion rate of 77% at 425°C. In addition, 7Ce-10Ni/KCC-1 showed a remarkable stability performance during a continuous 60 h reaction, indicating that it would be a good route for CO<sub>2</sub> utilization.</p>

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Promotion Effect of Ce Doping on Mesoporous Ni/KCC-1 Catalysts for CO2 Hydrogenation to CH4

  • 期刊论文

  • 发表日期：

    2025年10月16日

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  • Yanyan Feng,
  • Yongge Liu,
  • Quanbei Li,
  • Didi Wang,
  • Juanjuan Liu,
  • Wen Yang

摘要

Abstract—

With the aim of achieving high-performance catalysts for CO2 hydrogenation to CH4, a highly efficient, stable and mesoporous Ce-Ni/KCC-1 catalyst was developed, and the effects of Ce doping on the morphology, structure and CO2 hydrogenation performance of the catalysts were investigated. The results demonstrated that the doping of Ce could reduce the particle size of Ni active components, advance the dispersion of metallic Ni and increase the number of alkaline sites, thereby promoting the catalytic activity of the modified catalyst. Obviously, the catalyst 7Ce-10Ni/KCC-1 achieved a CH4 selectivity of 98% and a CO2 conversion rate of 77% at 425°C. In addition, 7Ce-10Ni/KCC-1 showed a remarkable stability performance during a continuous 60 h reaction, indicating that it would be a good route for CO2 utilization.