Adipic Acid → Beta-Isophorone

Participants

Reaction Steps

α-isophorone (α-IP) and 7% by weight of adipic acid relative to the amount of α-isophorone were fed to the bottom of the oldershow distilling column (30 plates, 50 mmφ) equipped with a vacuum jacket, and the bottom was heated to start the mixture refluxing. Thereafter, β-isophorone (β-IP) was obtained in the form of a distillate at a distilling rate of 30 g/hr while supplying α-IP to the bottom of the distilling column at a supply rate of 30 g/hr. The distilling column was manipulated at an atmospheric pressure and a reflux ratio of 63. Moreover, the residence time of α-IP at the bottom was 2 hours, the temperature of the bottom was 220° C., and the temperature of the distillate was 183° C.

Provenance & Evidence