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Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/16806

Title: Oxidative Dimerization of Methane over Magnesium and Calcium Oxide Catalysts Promoted with Group IA Ions: The Role of [M+O-] Centers
Authors: Lin, Chiu-Hsun;Tomoyasu Ito;Wang, Ji-Xiang;Jack H. Lunsford
Contributors: 化學系
Date: 1987-08
Issue Date: 2013-06-05T09:35:36Z
Publisher: American Chemical Society
Abstract: The oxidative dimerization of CH4 to C2H4 and C2H6 over 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'O-] (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.
Relation: Journal of the American Chemical Society, 109(16): 4808-4810
Appears in Collections:[Department of Chemistry] Periodical Articles

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