公开(公告)号：DE2650892A1

公开(公告)日：1978-06-01

申请号：DE2650892

申请日：1976-11-06

Applicant: BASF AG

Inventor： MAGNUSSE PETER DIPL CHEM DR ,  HERRMANN GUENTER DIPL ING DR ,  FROMMER ELMAR DIPL CHEM DR

IPC: C07C27/12 ,  B01J31/00 ,  B01J31/04 ,  C07C20060101 ,  C07C13/18 ,  C07C27/00 ,  C07C27/26 ,  C07C35/08 ,  C07C45/00 ,  C07C49/403 ,  C07C67/00 ,  C07C49/30

Abstract: The treatment of reaction mixts. contg. cyclohexanol and cyclohexanone obtd. by oxidn. of cyclohexane in O2 or gases contg. it, in the liq. phase, at 130-200 degrees C, at 5-25 bars pressure, involves the action in two stages of aq. solns. of alkaline hydroxide and/or carbonate. Fresh aq. alkaline soln. is introduced at the second stage, and the resulting residual alkali is sepd. and added to fresh reaction mixt. at the first stage where the treatment is carried out in presence of inert gases. The inert gases are removed before the second stage. Process purifies the cyclohexanol/cyclohexanone mixt. These cpds. are used to prepare adipic acid or caprolactam. The use of inert gases in the process reduces consumption of alkali and so reduces the amt. of alkaline waste-water which must be treated subsequently.