Patent ID: 9233889
Filing Date: 2016-01-12
CPC Classification: C07C

Claim Text:
1. A hydroalkylation process comprising: (a) treating a hydrogen stream comprising hydrogen and an impurity having the general formula CO (b) pretreating a benzene stream comprising benzene and a benzene impurity to remove the benzene impurity in the benzene stream to about 0.1 ppm or less; and (c) contacting the pretreated benzene stream with the treated hydrogen stream in the presence of a hydroalkylation catalyst to form cyclohexylbenzene; wherein the hydroalkylation catalyst comprises a molecular sieve selected from the group consisting of MCM-22, EMM-10, EMM-11, EMM-12, EMM-13, MCM-49, MCM-56, isotypes of MCM-49 and MCM-56, and any combination thereof.