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

doi:10.1021/ja00250a009

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

Department of Chemistry

Research output: Contribution to journal › Article

119 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 language	English
Pages (from-to)	4808-4810
Number of pages	3
Journal	Journal of the American Chemical Society
Volume	109
Issue number	16
DOIs	https://doi.org/10.1021/ja00250a009
Publication status	Published - 1987 Aug 1

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All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

Cite this

Lin, C-H., Ito, T., Wang, J. X., & Lunsford, J. H. (1987). Oxidative Dimerization of Methane over Magnesium and Calcium Oxide Catalysts Promoted with Group IA Ions: The Role of [m⁺0”1 Centers. Journal of the American Chemical Society, 109(16), 4808-4810. https://doi.org/10.1021/ja00250a009

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10.1021/ja00250a009