Process for the preparation of unsaturated acids from unsaturate

Details Process for the preparation of unsaturated acids from unsaturate Process for the preparation of unsaturated acids from unsaturate

1976-10-19

1978-04-18

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252435, 260530N, B01J 2714, C07C 5124

Patent

active

040850650

ABSTRACT:
Methacrylic acid or acrylic acid are produced by the oxidation of methacrolein or acrolein, respectively, with molecular oxygen in the vapor phase in the presence of a catalytic oxide of molybdenum, phosphorus, arsenic, at least one element selected from the group consisting of U, Ti, Nb, Re, Pb, Zn, and Ga, oxygen, and optionally, at least one of Cu, a rare earth element, Ag, Ta, In, Th, Cd, Tl, alkaline earth metal, NH.sub.4, Cl, Ni, Al and Ge.

REFERENCES:
patent: 3686294 (1972-08-01), Ito et al.
patent: 3761516 (1973-09-01), Khoobiar
patent: 3956376 (1976-05-01), Ferlazzo et al.
patent: 3998876 (1976-12-01), Kato et al.

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