Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1978-05-23
1980-09-23
Garner, Vivian
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
252430, 252472, 252473, 252474, C07C 6705
Patent
active
042244560
ABSTRACT:
Disclosed is a vapor phase catalytic oxidation process for preparing an aliphatic carboxylic acid ester of a monoaromatic compound having 1 to 2 hydroxymethyl substituents, such as benzyl acetate, p-methylbenzyl acetate, p-xylylenediacetate, benzyl propionate and benzyl butyrate. A gaseous feed comprised of a benzene compound having 1 to 2 methyl substituents, an aliphatic monocarboxylic acid having 2 to 4 carbon atoms and molecular oxygen is contacted with an improved catalyst. The metal ingredients of the catalyst consist essentially of (a) palladium, (b) arsenic and (c) at least one metal selected from alkali metals and alkali earth metals, and the atomic ratio of palladium:arsenic:the alkali or alkali earth metal is 1:0.05-4:0.1-10.
REFERENCES:
patent: 3547982 (1970-12-01), McKeon et al.
patent: 4033999 (1977-07-01), Onoda et al.
Koga Kunitoshi
Kuniyoshi Mineo
Matsui Kanenobu
Umemura Sumio
Garner Vivian
Ube Industries Ltd.
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