Frontiers in Chemistry (Oct 2022)

Boosting CO2 hydrogenation to methane over Ni-based ETS-10 zeolite catalyst

  • Mei Xiang,
  • Mei Xiang,
  • Zhangxi Gao,
  • Xiaonan Ji,
  • Dantong Li,
  • Yaoyao Deng,
  • Yalong Ding,
  • Chi Yu,
  • Wei Zhang,
  • Zhenwei Zhang,
  • Zeying Wu,
  • Jiancheng Zhou

DOI
https://doi.org/10.3389/fchem.2022.1041843
Journal volume & issue
Vol. 10

Abstract

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The activation and conversion of the CO2 molecule have always been the most vexing challenge due to its chemical inertness. Developing highly active catalysts, which could overcome dynamic limitations, has emerged as a provable and effective method to promote CO2 activation–conversion. Herein, ETS-10 zeolite–based catalysts, with active nickel species introduced by in situ doping and impregnation, have been employed for CO2 methanation. Conspicuous CO2 conversion (39.7%) and perfect CH4 selectivity (100%) were achieved over the Ni-doped ETS-10 zeolite catalyst at 280°C. Comprehensive analysis, which include X-ray diffraction, N2 adsorption–desorption, SEM, TEM, H2 chemisorption, CO2 temperature programmed desorption, and X-ray photoelectron spectroscopy, was performed. Also, the results indicated that the resultant hierarchical structure, high metal dispersion, and excellent CO2 adsorption–activation capacity of the Ni-doped ETS-10 zeolite catalyst played a dominant role in promoting CO2 conversion and product selectivity.

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