A study of the kinetics of the oxidative coupling of methane over a Li/Sn/MgO catalyst

S.J. Korf, J.A. Roos, J.A. Vreeman, J.W.H.C. Derksen, J.G. van Ommen, J.R.H. Ross

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Abstract

The rate of reaction of methane with oxygen in the presence of a Li/Sn/MgO catalyst has been studied as a function of the partial pressures of CH4, O2 and CO2 using a well-mixed reaction system which is practically gradientless with respect to gas-phase concentrations. It is concluded that the rate-determining step involves reaction of a molecule of CH4 adsorbed on the catalyst surface with an adsorbed di-atomic oxygen species. The kinetics are consistent with a Langmuir-Hinshelwood type mechanism involving competitive adsorption of CH4, O2 and CO2 on a single site. A comparison is made with previously published results for the Li/MgO material.
Original languageUndefined
Pages (from-to)417-426
JournalCatalysis today
Volume6
Issue number4
DOIs
Publication statusPublished - 1990

Keywords

  • IR-72849

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