Glutaric Acid → Adipic Acid

Participants

Reaction Steps

The mother liquor with the urea-succinic acid adduct removed was treated with the same strongly acidic ion exchange resin as mentioned above to remove urea. After removal of 90 g. of water, the treated mother liquor was cooled to and allowed to stand at 20° C. to deposit crude adipic acid. By filtration, 11.0 g. of crude adipic acid was obtained. The obtained crude adipic acid contained 1.8% by weight of glutaric acid and 1.4% by weight of succinic acid and may be recycled to a purification step in the production of adipic acid to obtain pure adipic acid. The urea adsorbed on the strongly acidic ion exchange resin was recovered in the form of an aqueous solution of urea by treating the resin with hot water of 60° C.

Provenance & Evidence