Oxidative conversion of methane to higher hydrocarbons

Journal Article · Sun Feb 01 04:00:00 EST 1987 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(87)90122-9· OSTI ID:5589065

Sofranko, J A; Leonard, J J; Jones, C A

Many transition metal oxides have been evaluated as oxidative coupling catalysts for converting methane to C/sub 2/ and higher hydrocarbons. Reactions were done in a cyclic redox mode in which oxidized catalyst was reacted with methane in the absence of oxygen to form coupling products and reduced catalyst which was reoxidized with air in a separate step. Manganese, indium, germanium, antimony, tin, bismuth, and lead oxides were found to be effective coupling catalysts, giving 10 to 50% selectivity to higher hydrocarbons. Silica is a superior support compared to alumina. Mechanistic studies with manganese oxide on silica indicate that the initial coupling product is ethane which is formed via dimerization of a CH/sub 3/ radical-like species. The ethane is oxidatively dehydrogenated to ethylene which may react with CH/sub 3/ to give propylene. The major path for combustion involves sequential oxidation of products.

• Research Organization: ARCO Chemical Co., Newtown Square, PA
• OSTI ID: 5589065
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 103:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

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