Catalyst for the manufacture of methacrylic or acrylic acid

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

1977-01-10

1979-02-06

Gantz, Delbert E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252437, 562534, B01J 2714, C07C 5124

Patent

active

041383656

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: 3554931 (1971-01-01), Brown
patent: 3579574 (1971-05-01), Van der Meer
patent: 3704317 (1972-11-01), Yamashita et al.
patent: 3792086 (1974-02-01), Frank et al.
patent: 3976688 (1976-08-01), Akiyama et al.
patent: 4001316 (1977-01-01), Ishimi
patent: 4042623 (1977-08-01), Ogawa

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