Production of maleic aahydride

C - Chemistry – Metallurgy – 07 – D

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252/52.K, 260/36

C07D 307/60 (2006.01) B01J 23/22 (2006.01) B01J 23/847 (2006.01) B01J 27/18 (2006.01) B01J 27/198 (2006.01) C07C 51/215 (2006.01) C07C 51/25 (2006.01) C07C 51/31 (2006.01)

Patent

CA 1059498

Abstract of the disclosure Maleic anhydride is obtained in a high yield as well as in a high purity by oxidation of a hydrocarbon of not less than four carbon atoms in gaseous phase in the presence o? a catalyst comprising (a) vanadium oxide, (b) phosphorus oxide, (c) thal- lium oxide and/or alkaline earth metal oxide, and optionally, further containing (d) iron oxide.

224248

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