Intrinsic kinetics of the oxidation of methane over an industrial copper(II) oxide catalyst on a γ-alumina support

J.W. Veldsink, G.F. Versteeg, W.P.M. van Swaaij

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Abstract

The kinetic rate of the heterogeneously catalysed methane oxidation reaction was studied at temperatures ranging from 723 to 923 K and atmospheric pressure. A commercially available CuO catalyst supported by thermally stable γ-Al2O3 was used as the catalyst. This kinetic study was carried out in order to evaluate whether this reaction can be suitably handled in a novel type of membrane reactor. The equipment in which the experiments were conducted consisted of a differentially operated fixed-bed reactor. For this set-up heat and mass transport limitations have been checked and shown to be absent. The influence of the concentrations of the products and reactants on the reaction rate was studied over a wide range of conditions. Fractions of methane ranged from 1 to 6 vol.%, oxygen between 600 ppm and 21 vol.%, carbon dioxide between 0 and 20 vol.%, and water from 0 to 8 vol.%. All experimentally observed reaction rates could be represented within 30% by an Eley-Rideal type reaction rate expression.
Original languageEnglish
Pages (from-to)273-283
Number of pages11
JournalThe Chemical Engineering Journal
Volume57
Issue number3
DOIs
Publication statusPublished - 1995

Keywords

  • Fixed-bed reactor
  • Combustion
  • Reaction kinetics

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