公开(公告)号：US20170137350A1

公开(公告)日：2017-05-18

申请号：US15348010

申请日：2016-11-10

Applicant: ExxonMobil Research and Engineering Company

Inventor： Brian WEISS ,  Benjamin A. McCOOL

IPC: C07C7/144 ,  B01D71/02 ,  C07C5/27 ,  B01D67/00 ,  B01D69/08 ,  C07C7/14 ,  B01D69/12 ,  B01D61/02

CPC classification number: B01D61/025 ,  B01D53/228 ,  B01D61/002 ,  B01D61/007 ,  B01D67/0067 ,  B01D69/08 ,  B01D69/12 ,  B01D69/125 ,  B01D71/021 ,  B01D71/022 ,  B01D2323/30 ,  B01D2325/022 ,  B01D2325/04 ,  C02F1/441 ,  C02F2103/08 ,  C07C5/2732 ,  C07C7/005 ,  C07C7/14 ,  C07C7/144 ,  C07C15/08

Abstract: Asymmetric membrane structures are provided that are suitable for hydrocarbon reverse osmosis of small hydrocarbons. Separation of para-xylene from ortho- and meta-xylene is an example of a separation that can be performed using hydrocarbon reverse osmosis. Hydrocarbon reverse osmosis separations can be incorporated into a para-xylene isomerization and recovery system in a variety of manners.

公开(公告)号：US20180222824A1

公开(公告)日：2018-08-09

申请号：US15886115

申请日：2018-02-01

Applicant: ExxonMobil Research and Engineering Company

Inventor： Benjamin A. McCOOL ,  Michael P. LANCI ,  Randall D. PARTRIDGE ,  Carla S. PEREIRA

IPC: C07C7/13 ,  B01D15/08

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

Abstract: A process for separating dimethyl biphenyl (DMBP) isomers, including contacting a mixture of 3,3′-DMBP, 3,4′-DMBP and 4,4′-DMBP in a first solvent with a 12-member ring zeolite exchanged with potassium or barium, or combinations thereof, and adsorbing the 3,3′-DMBP onto the 12-member ring zeolite, such as by passing the mixture through at least one packed bed of the potassium and/or barium exchanged 12-member ring zeolite.

公开(公告)号：US20180215685A1

公开(公告)日：2018-08-02

申请号：US15886199

申请日：2018-02-01

Applicant: ExxonMobil Research and Engineering Company

Inventor： Changyub PAEK ,  Michael P. LANCI ,  Randall D. PARTRIDGE ,  Allen W. BURTON ,  Carla S. PEREIRA ,  Benjamin A. McCOOL

IPC: C07C7/13 ,  B01J20/18 ,  B01J20/28 ,  C07C15/14

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 separating one or more 3,3′-, 3,4′- and 4,4′-dimethyl biphenyl isomers, a feed comprising the isomers is contacted with a zeolite adsorbent which contains one or more metal cations in the +1 or +2 oxidation states. Separation processes for each of the 3,3′-, 3,4′- and 4,4′-dimethyl biphenyl isomers is provided.