Process for preparation of methacrylic acid

Details Process for preparation of methacrylic acid Process for preparation of methacrylic acid

1984-12-14

1986-11-04

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

562535, 502209, C07C 51235, C07C 5125, C07C 5705, C07C 57055

Patent

active

046211551

ABSTRACT:
A catalyst for the vapor-phase oxidation of an unsaturated hydrocarbon, alcohol, saturated aliphatic aldehyde or unsaturated aliphatic aldehyde having 4 carbon atoms, said catalyst comprising a molybdovanadophosphoric acid having X-ray diffraction lines (Cu-K.sub..alpha. radiation) at 2.theta.=about 26.2.degree., about 10.5.degree., about 21.3.degree. and about 30.3.degree. and a crystal structure approximating that of its salt, and said catalyst having the composition represented by the general formula

REFERENCES:
patent: 4225466 (1980-09-01), Wada et al.
patent: 4256914 (1981-03-01), Umemura et al.
patent: 4273676 (1981-06-01), Matsumoto et al.

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