公开(公告)号：US20180222817A1

公开(公告)日：2018-08-09

申请号：US15886408

申请日：2018-02-01

Applicant: ExxonMobil Research and Engineering Company

Inventor： Michael P. LANCI ,  Changyub PAEK ,  Catherine M. DORSI

IPC: C07C2/74 ,  C07C5/367 ,  C07C2/66 ,  C07C5/10 ,  C07C5/27

CPC classification number: C07C2/74 ,  B01D15/08 ,  B01J20/186 ,  B01J20/28007 ,  C07C2/66 ,  C07C5/10 ,  C07C5/2732 ,  C07C5/367 ,  C07C7/13 ,  C07C15/14

Abstract: In a process for producing one or more 3,3′-, 3,4′- and 4,4′-dimethyl biphenyl isomers, a feed comprising toluene is contacted with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation reaction product comprising (methylcyclohexyl)toluenes. At least part of the hydroalkylation reaction product is dehydrogenated in the presence of a dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising a mixture of dimethyl biphenyl isomers. The dehydrogenation reaction product is then separated into at least a first stream containing one or more 3,3′-, 3,4′- and 4,4′-dimethyl biphenyl isomers and at least one second stream comprising one or more 2,X′-dimethyl biphenyl isomers (where X is 2, 3, or 4). The 3,3′-, 3,4′- and 4,4′-dimethyl biphenyl isomers are then separated utilizing selective adsorption.