Process for the manufacture of methacrylic or acrylic acid

Details Process for the manufacture of methacrylic or acrylic acid Process for the manufacture of methacrylic or acrylic acid

1982-03-04

1984-02-21

Garner, Vivian

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

Organic compounds

Carboxylic acids and salts thereof

423415A, 423437, 562536, 568389, 502209, 502213, C07C 5125, C07C 57055

Patent

active

044331673

ABSTRACT:
A catalyst comprising (1) palladium, (2) phosphorus, (3) antimony, (4) X and (5) oxygen wherein X denotes at least one element selected from the group consisting of potassium, sodium, rubidium, lithium, cerium, beryllium, magnesium, calcium, vanadium, strontium, zinc, thorium and rhenium.
There is also provided a process for the manufacture of methacrylic or acrylic acid by oxidizing methacrolein or acrolein with molecular oxygen in the vapor phase in the presence of the catalyst defined above.

REFERENCES:
patent: 3792086 (1974-02-01), Frank et al.
patent: 4042623 (1977-08-01), Ogawa

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