Preparation of maleic anhydride using a crystalline vanadium(IV)

Details Preparation of maleic anhydride using a crystalline vanadium(IV) Preparation of maleic anhydride using a crystalline vanadium(IV)

1978-03-24

1979-10-16

Ford, John M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252437, C07D30760

Patent

active

041713168

ABSTRACT:
A process for the preparation of maleic anhydride in high yield and selectivity which comprises partially oxidizing an unsaturated aliphatic hydrocarbon selected from 1-butene, 2-butene and 1,3-butadiene or mixtures thereof in the vapor phase at elevated temperatures with oxygen or an oxygen-containing gas in the presence of a single phase vanadium(IV)bis(metaphosphate) catalyst having the formula VO(PO.sub.3).sub.2. Preferably the reaction is carried out in the presence of steam to enhance the selectivity to maleic anhydride.

REFERENCES:
patent: 3255211 (1966-06-01), Kerr
Nakamura et al., Journal of Catalysis 34, pp. 345-355 (1974).
Tofield et al., Journal of Chemical Society-Dalton Transactions, (1975), pp. 1806-1810.

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