公开(公告)号：US11230515B2

公开(公告)日：2022-01-25

申请号：US16497256

申请日：2018-03-19

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew S. Ide ,  Doron Levin ,  Scott J. Weigel ,  Brett T. Loveless ,  Jean W. Beeckman

IPC: C07C7/13 ,  B01J29/70 ,  B01J35/02 ,  B01J35/10 ,  C07C2/66 ,  C07C6/12 ,  B01J21/12

Abstract: Methods for removing impurities from a hydrocarbon stream using a guard bed material are disclosed. The guard bed material includes compositions which comprises a zeolite and a mesoporous support or binder. The zeolite has a Constraint Index of less than 3. The mesoporous support or binder comprises a mesoporous metal oxide having a particle diameter of greater than or equal to 20 μm at 50% of the cumulative pore size distribution (d50), a pore volume of less than 1 cc/g, and an alumina content of greater than 75%, by weight. Also disclosed are processes for producing mono-alkylated aromatic compounds (e.g., ethylbenzene or cumene) using impure feed streams that are treated by the disclosed methods to remove impurities which act as catalyst poisons to downstream alkylation and/or transalkylation catalysts.

公开(公告)号：US11213804B2

公开(公告)日：2022-01-04

申请号：US16269959

申请日：2019-02-07

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Doron Levin

IPC: B01J23/62 ,  B01J21/12 ,  B01J23/14 ,  B01J37/02 ,  B01J37/08 ,  C07C5/32 ,  B01J37/34

Abstract: Disclosed herein are methods of preparing dehydrogenation catalysts using non-halogen containing metal sources. The methods generally comprise the steps of providing a first solution comprising anions of a first metal selected from Group 14 of the Periodic Table of Elements, and impregnating an inorganic support with the first solution to obtain a first impregnated inorganic support, wherein the first solution has a pH value of less than the isoelectric point of the inorganic support. The dehydrogenation catalysts prepared in accordance with the methods of the present disclosure are typically free or substantially free of halogen species. Such catalysts may be particularly useful in the dehydrogenation of a feed comprising cyclohexane and/or methylcyclopentane.

公开(公告)号：US20210387928A1

公开(公告)日：2021-12-16

申请号：US16903034

申请日：2020-06-16

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Michel Molinier ,  Hari Nair ,  Meha Rungta ,  Michael Salciccioli ,  Doron Levin ,  Scott J. Weigel

IPC: C07C4/18 ,  C07C5/27 ,  B01J21/04 ,  B01J23/36

Abstract: Alkyl-demethylation of C2+-hydrocarbyl substituted aromatic hydrocarbons can be utilized to treat one or more of a heavy naphtha reformate stream, a hydrotreated SCN stream, a C8 aromatic hydrocarbon isomerization feed stream, a C9+ aromatic hydrocarbon transalkylation feed stream, and similar hydrocarbon streams to produce additional quantity of xylene products.

公开(公告)号：US11198659B2

公开(公告)日：2021-12-14

申请号：US16903009

申请日：2020-06-16

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Hari Nair ,  Meha Rungta ,  Michel Molinier ,  Doron Levin ,  Scott J. Weigel ,  Michael Salciccioli ,  John F. Brody

IPC: C07C4/18 ,  C07C6/12 ,  C07C5/27 ,  B01J21/04 ,  B01J23/36 ,  C07C2/72

Abstract: Alkyl-demethylation of C2+-hydrocarbyl substituted aromatic hydrocarbons can be utilized to treat one or more of a heavy naphtha reformate stream, a hydrotreated SCN stream, a C8 aromatic hydrocarbon isomerization feed stream, a C9+ aromatic hydrocarbon transalkylation feed stream, and similar hydrocarbon streams to produce additional quantity of xylene products.

公开(公告)号：US20210017103A1

公开(公告)日：2021-01-21

申请号：US16903058

申请日：2020-06-16

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Meha Rungta ,  Michel Molinier ,  Hari Nair ,  Doron Levin ,  Scott J. Weigel ,  Michael Salciccioli

IPC: C07C6/06 ,  C07C4/18 ,  C07C5/27 ,  C07C7/00

Abstract: Alkyl-demethylation of C2+-hydrocarbyl substituted aromatic hydrocarbons can be utilized to treat one or more of a heavy naphtha reformate stream, a hydrotreated SCN stream, a C8 aromatic hydrocarbon isomerization feed stream, a C9+ aromatic hydrocarbon transalkylation feed stream, and similar hydrocarbon streams to produce additional quantity of xylene products.

公开(公告)号：US10821425B2

公开(公告)日：2020-11-03

申请号：US16097666

申请日：2017-04-13

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew S. Ide ,  Brett T. Loveless ,  Doron Levin ,  Tilman W. Beutel

IPC: B01J29/00 ,  B01J29/70 ,  B01J29/08 ,  B01J29/18 ,  B01J35/00 ,  B01J37/08 ,  B01J37/14 ,  B01J38/02 ,  B01J38/16 ,  C07C2/66

Abstract: The present disclosure relates to a process for producing a mono-alkylated aromatic compound using a treated catalyst made by a method of this invention is disclosed. The method comprises the steps of heating an untreated catalyst in the presence of a gaseous stream having a dew point temperature less than about 5° C. to form a treated catalyst. The treatment is effective to improve the activity and selectivity of the catalyst.