Recovering catalyst values in reaction liquors from oxidative pr

Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants

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Details

252415, 423 49, 423 52, 423139, 562414, 562593, B01J 2732, B01J 2728, C07C 5142, C01G 4500, C01G 5100

Patent

active

042027977

ABSTRACT:
Heavy metal values are recovered from mother liquors remaining from oxidations to mono- or poly- carboxylic acids in aliphatic monocarboxylic acids in presence of catalyst heavy metals and bromides by (1) concentrating, (2) precipitating and (3) separating heavy metals as sulphates and (4) recovering aliphatic monocarboxylic acid and H Br by distillation, (5) dissolving sulphates in water, (6) adsorbing heavy metals on a cation exchange resin and (7) desorbing them, preferably with the solution from Step 4.

REFERENCES:
patent: 2964559 (1960-12-01), Burney et al.
patent: 3033899 (1962-05-01), Knobloch et al.
patent: 3780096 (1973-12-01), Johnson et al.
patent: 4008306 (1977-02-01), Yamashita et al.

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