Oxidative Dimerization of Methane over Magnesium and Calcium Oxide Catalysts Promoted with Group IA Ions: The Role of [m+0”1 Centers

Chiu-Hsun Lin, Tomoyasu Ito, Ji xiang Wang, Jack H. Lunsford

Research output: Contribution to journalArticle

120 Citations (Scopus)

Abstract

The oxidative dimerization of CH4 to C2H4and C2H6over MgO and CaO is strongly influenced by certain group IA ions which are employed as promoters. Lithium is an effective promoter for MgO, but sodium and potassium are not; all three group IA ions are effective promoters for CaO. Centers of the type [M+0“] (M+is a substitutional group IA ion) are present in each active and selective catalyst, which supports the hypothesis that these centers are active for the formation of CH3* radicals and, therefore, in the overall oxidative dimerization reaction.

Original languageEnglish
Pages (from-to)4808-4810
Number of pages3
JournalJournal of the American Chemical Society
Volume109
Issue number16
DOIs
Publication statusPublished - 1987 Aug 1

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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