Dry reforming of methane over a ruthenium/carbon nanotube catalyst

Yuan Zhu, Kun Chen, Robert Barat, Somenath Mitra

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In this study, CH4 dry reforming was demonstrated on a novel microwave-synthesized ruthenium (Ru)/carbon nanotube (CNT) catalyst. The catalyst was tested in an isothermal laboratory-packed bed reactor, with gas analysis by gas chromatography/thermal conductivity detection. The catalyst demonstrated excellent dry-reforming activity at modest temperatures (773–973 K) and pressure (3.03 × 105 Pa). Higher reaction temperatures favored increased conversion of CH4 and CO2, and increased H2/CO product ratios. Slight coke deposition, estimated by carbon balance, was observed at higher temperatures and higher feed CH4/CO2 . A robust global kinetic model composed of three reversible reactions—dry reforming, reverse water gas shift, and CH4 decomposition—simulates observed outlet species concentrations and reactant conversions using this Ru/CNT catalyst over the temperature range of this study. This engineering kinetic model for the Ru/CNT catalyst predicts a somewhat higher selectivity and yield for H2, and less for CO, in comparison to previously published results for a similarly prepared Pt_Pd/CNT catalyst from our group.

Original languageEnglish (US)
Article number16
Pages (from-to)1-14
Number of pages14
JournalChemEngineering
Volume4
Issue number1
DOIs
StatePublished - Mar 2020

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Engineering(all)
  • Energy(all)

Keywords

  • Carbon dioxide
  • Carbon nanotubes
  • Catalysis
  • Methane
  • Reforming
  • Ruthenium

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