Process for Producing Phenol and/or Cyclohexanone

摘要

In a process for producing phenol and/or cyclohexanone, cyclohexylbenzene is contacted with an oxygen-containing gas in the presence of an oxidation catalyst under oxidation conditions effective to produce an oxidation effluent comprising cyclohexylbenzene hydroperoxide. At least a portion of the oxidation effluent is then subjected to a concentrating step to produce a cleavage feed having a higher concentration of cyclohexylbenzene hydroperoxide than the oxidation effluent. A cleavage reaction mixture comprising the cleavage feed is then contacted with a solid acid catalyst in a cleavage reaction zone under conditions effective to produce a cleavage product comprising phenol and cyclohexanone.

主权项

1. A process for producing phenol, the process comprising:
(a) contacting cyclohexylbenzene with an oxygen-containing gas in the presence of an oxidation catalyst under oxidation conditions effective to produce an oxidation effluent comprising cyclohexylbenzene hydroperoxide at a first concentration Con1 and residual cyclohexylbenzene; (b) concentrating at least a portion of the oxidation effluent to produce a cleavage feed comprising cyclohexylbenzene hydroperoxide at a second concentration Con2, where Con2>Con1; and (c) contacting a cleavage reaction mixture formed from the cleavage feed with a solid acid catalyst in a cleavage reaction zone under conditions effective to produce a cleavage product comprising phenol and cyclohexanone.