Sd Lizenzverwertungsgesellschaft Mbh & Co Kg

Martin Millman

Ashok S Padia

Howard Sachs

An improved process for the production of maleic anhydride by the catalytic oxidation of n-butane. Maleic anhydride is produced by reacting n-butane gas with oxygen or an oxygen-containing gas, in the presence of a vanadium phosphorus oxide (VPO) catalyst. An improved yield and selectivity in the production of maleic anhydride is attained by the addition of a substantially pure carbon monoxide gas stream in the reactant feed stream. A process is given for the production of maleic anhydride by reacting a combination of gas streams in the presence of a VPO catalyst. The combination of gas streams comprises an n-butane gas stream, an oxygen or oxygen-containing gas stream, and a substantially pure carbon monoxide gas stream. The amount of carbon monoxide present in the combination of gas streams is from about 0.5 volume % to about 6 volume % based on the total volume of the combination of gas streams.

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Montvale, NJ, United States of America

Martin Millman