Eclectic trimetallic Ni–Co–Ru catalyst for the dry reforming of methane

Nicolas Abdel Karim Aramouni, Joseph Zeaiter, Witold Kwapinski, James J. Leahy, Mohammad N. Ahmad

Research output: Contribution to journalArticlepeer-review

Abstract

Ru-promoted Ni–Co catalysts supported on MgO–Al2O3 are tested for dry reforming activity in a fixed-bed reactor at atmospheric pressure. The effect of temperature and contact time is investigated, and the catalysts maintain high stability for up to 47 h on stream. The support surface area significantly affects dispersion, and whisker carbon is observed in spent samples with pore sizes higher than 15 nm. H2-TPR studies reveal the presence of spinels that are not completely reducible, yet the catalysts give remarkable activity. Four synthesis methods are tested for the support, with the sol-gel method in neutral conditions providing the best performance, with a small compromise on activity but a significant improvement in catalyst stability and no whisker carbon formation. Further work will optimize the Ni/Co ratio in the active phase to decrease the carbon buildup on the catalysts.

Original languageEnglish
Pages (from-to)17153-17163
Number of pages11
JournalInternational Journal of Hydrogen Energy
Volume45
Issue number35
DOIs
Publication statusPublished - 10 Jul 2020

Keywords

  • Cobalt
  • Methane dry reforming
  • Nickel
  • Ruthenium
  • Whisker carbon

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