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

1975-08-18

1977-04-12

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252435, 260530N, B01J 2714

Patent

active

040174239

ABSTRACT:
Catalysts containing the oxides of molybdenum and phosphorus promoted with rubidium and at least one element selected from the group consisting of As, Cd, In, Sn, Tl, K, Ca, V, U, Ce, W, Ni, Zr, Ba, Fe, Rh, Mn, Re, Ru, Co, and Cu have been found to be especially desirable in the vapor phase oxidation of acrolein and methacrolein with molecular oxygen to yield acrylic acid and methacrylic acid respectively. The reaction of methacrolein gives an especially pure product in high yields and selectivities of methacrylic acid.

REFERENCES:
patent: 3086026 (1963-04-01), Wiebusch et al.
patent: 3156705 (1964-11-01), Kerr
patent: 3795703 (1974-03-01), Niin et al.
patent: 3882047 (1975-05-01), Niina et al.
patent: 3893945 (1975-07-01), Kobayashi et al.
Derwent Abstracts of DT2455-216 as cited by Applicants.
Derwent Abstracts of DT2454-587 as cited by Applicants.

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