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    Xylene Isomerization Process and Catalyst Therefor
    23.
    发明申请
    Xylene Isomerization Process and Catalyst Therefor 审中-公开
    二甲苯异构化方法及催化剂

    公开(公告)号：US20140171293A1

    公开(公告)日：2014-06-19

    申请号：US14186453

    申请日：2014-02-21

    Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

    Inventor： John D. Ou ,  April D. Ross ,  Doron Levin ,  Mohan Kalyanaraman ,  Wenyih F. Lai

    IPC: B01J29/40

    CPC classification number: B01J29/40 ,  B01J29/70 ,  B01J29/90 ,  B01J38/10 ,  C07C5/2737 ,  C07C2529/40 ,  C07C2529/70 ,  Y02P20/52 ,  Y02P20/584 ,  C07C15/08

    Abstract: The invention concerns a xylenes isomerization process for the production of equilibrium or near-equilibrium xylenes. The process utilizes a catalyst comprising HZSM-5 or MCM-49 and process conditions including a temperature of less than 295° C. and a pressure sufficient to maintain the xylenes in liquid phase. In embodiments, the process can be operated in a continuous mode with ppm levels of dissolved H2 in the feed and in other embodiments in a cyclic mode without the H2 in feed but with periodic regenerations using a feed having low ppm levels of H2.

    Abstract translation: 本发明涉及用于产生平衡或近平衡二甲苯的二甲苯异构化方法。 该方法使用包含HZSM-5或MCM-49的催化剂和包括低于295℃的温度和足以将二甲苯保持在液相中的压力的​​工艺条件。 在实施方案中，该方法可以以进料中的ppm水平的溶解的H 2在进料中以及在其它实施方案中以循环模式操作，而不使用进料中的H 2，而是使用具有低ppm水平的H 2的进料进行周期性再生。

    Processes for Converting Benzene and/or Toluene Via Methylation
    25.
    发明申请
    Processes for Converting Benzene and/or Toluene Via Methylation 有权

    公开(公告)号：US20220119324A1

    公开(公告)日：2022-04-21

    申请号：US17431745

    申请日：2020-03-18

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： Seth M. Washburn ,  Hsu Chiang ,  Umar Aslam ,  Wenyih F. Lai ,  Doron Levin ,  Tan-Jen Chen

    IPC: C07C2/86 ,  B01J29/70

    Abstract: This disclosure provides improved processes for converting benzene/toluene via methylation with methanol/dimethyl ether for producing, e.g., p-xylene. In an embodiment, a process utilizes a methylation catalyst system comprising a molecular sieve catalyst and an auxiliary catalyst. The auxiliary catalyst comprises a metal element selected from Group 2, Group 3, the lanthanide series, the actinide series, and mixtures and combinations thereof. The auxiliary catalyst may comprise the oxide of the metal element. Deactivation of the molecular sieve catalyst can be reduced with the inclusion of the auxiliary catalyst in the methylation catalyst system.

    Preparation and use of phenylstyrene
    26.
    发明授权
    Preparation and use of phenylstyrene 有权

    公开(公告)号：US10787399B2

    公开(公告)日：2020-09-29

    申请号：US15946077

    申请日：2016-10-14

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： Michael Salciccioli ,  Alan A. Galuska ,  Ranjita Ghose ,  Doron Levin ,  Mosha H. Zhao

    IPC: C07C2/74 ,  C07C2/66 ,  C07C5/333 ,  C07C5/367 ,  C07C6/12 ,  C07C6/06

    Abstract: A process for producing phenylstyrene comprises contacting benzene with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation product comprising cyclohexylbenzene. At least part of the cyclohexylbenzene is then contacted with ethylbenzene in the presence of a transalkylation catalyst under conditions effective to produce a transalkylation product comprising cyclohexylethylbenzene and/or with ethylene in the presence of an alkylation catalyst under conditions effective to produce an alkylation product comprising cyclohexylethylbenzene. At least part of the cyclohexylethylbenzene is then contacted with a dehydrogenation catalyst under conditions effective to produce a dehydrogenation product comprising phenylstyrene.

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