Lanthanum catalysts for CH4 oxidative coupling. A comparison of the reactivity of phases

R. Paul Taylor, Glenn L Schrader

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Abstract

The catalytic performance of A-La2O3, La(OH)3, II-La2O2CO3, and La2(CO3)3 for the catalytic oxidative coupling of methane to C2 hydrocarbons was investigated over a range of reaction temperatures (up to 850°C). The activity of the starting materials for methane conversion and selectivity to ethylene and ethane were in the order II-La2O2CO3 > La2(CO3)3 > La(OH)3 > A-La2O3. Postreaction characterization by Fourier transform infrared spectroscopy and X-ray diffraction revealed that these materials undergo significant transformations. On the basis of this information, the presence of the oxycarbonate phase appears to have a beneficial effect on catalytic performance.

Original languageEnglish (US)
Pages (from-to)1016-1023
Number of pages8
JournalIndustrial and Engineering Chemistry Research
Volume30
Issue number5
Publication statusPublished - May 1991
Externally publishedYes

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ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Environmental Science(all)
  • Polymers and Plastics

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