International Journal of Molecular Sciences (Mar 2023)

Spatially Formed Tenacious Nickel-Supported Bimetallic Catalysts for CO<sub>2</sub> Methanation under Conventional and Induction Heating

  • Daniel Lach,
  • Błażej Tomiczek,
  • Tomasz Siudyga,
  • Maciej Kapkowski,
  • Rafał Sitko,
  • Joanna Klimontko,
  • Sylwia Golba,
  • Grzegorz Dercz,
  • Krzysztof Matus,
  • Wojciech Borek,
  • Jaroslaw Polanski

DOI
https://doi.org/10.3390/ijms24054729
Journal volume & issue
Vol. 24, no. 5
p. 4729

Abstract

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The paper introduces spatially stable Ni-supported bimetallic catalysts for CO2 methanation. The catalysts are a combination of sintered nickel mesh or wool fibers and nanometal particles, such as Au, Pd, Re, or Ru. The preparation involves the nickel wool or mesh forming and sintering into a stable shape and then impregnating them with metal nanoparticles generated by a silica matrix digestion method. This procedure can be scaled up for commercial use. The catalyst candidates were analyzed using SEM, XRD, and EDXRF and tested in a fixed-bed flow reactor. The best results were obtained with the Ru/Ni-wool combination, which yields nearly 100% conversion at 248 °C, with the onset of reaction at 186 °C. When we tested this catalyst under inductive heating, the highest conversion was observed already at 194 °C.

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