Recovering cobalt and bromide catalyst values using a strong anion exchange resin

摘要

Cobalt catalyst values are recovered from mother liquors remaining from oxidations to mono- or polycarboxylic acids in lower aliphatic monocarboxylic acids in presence of catalysts comprising cobalt and bromide ions by (1) if necessary, adjusting the cobalt and bromide concentrations so that they are within specified limits (2) adsorbing cobalt and bromide ions (differentially with respect to extraneous ions) on a strongly basic anion exchange resin and (3) desorbing cobalt and bromide ions with lower aliphatic monocarboxylic acid containing more than 10% by weight of water.