公开(公告)号：US11813593B2

公开(公告)日：2023-11-14

申请号：US17252884

申请日：2019-06-20

Applicant: Dow Global Technologies LLC ,  Rohm and Haas Company

Inventor： Kirk W. Limbach ,  Christopher D. Frick ,  Dmitry A. Krapchetov ,  Wen -Sheng Lee ,  Victor J. Sussman ,  Jeffrey A. Herron

IPC: B01J23/52 ,  B01J21/04 ,  B01J21/08 ,  B01J35/00 ,  C07C67/39 ,  B01J6/00 ,  B01J37/03

CPC classification number: B01J23/52 ,  B01J21/04 ,  B01J21/08 ,  B01J35/008 ,  C07C67/39 ,  B01J6/001 ,  B01J37/031

Abstract: A heterogeneous catalyst comprising a support and gold, wherein: (i) said support comprises alumina, (ii) said catalyst comprises from 0.1 to 5 wt % of gold, (iii) at least 90 wt % of the gold is in the outer 60% of catalyst volume, and (iv) particles of the catalyst have an average diameter from 200 microns to 30 mm; wherein weight percentages are based on weight of the catalyst.

公开(公告)号：US20230113685A1

公开(公告)日：2023-04-13

申请号：US17908041

申请日：2021-03-15

Applicant: Dow Global Technologies LLC ,  Rohm and Haas Company

Inventor： Kirk W. Limbach ,  Christopher D. Frick ,  Wen -Sheng Lee ,  Victor J. Sussman ,  Dmitry A. Krapchetov ,  Jeffrey A. Herron

IPC: B01J23/52 ,  B01J21/06 ,  B01J35/00 ,  B01J37/02 ,  C07C67/39

Abstract: A catalyst comprising noble metal particles and titanium-containing particles. The noble metal particles and titanium-containing particles are disposed on an outer surface of a support. At least 20% by weight of the total weight of noble metal particles are adjacent to at least one titanium-containing particle. The noble metal particles have an average diameter of less than 15 nm, and the catalyst has an average diameter of at least 200 microns. A method for preparing methyl methacrylate from methacrolein and methanol using the catalyst is also disclosed.

公开(公告)号：US20210121856A1

公开(公告)日：2021-04-29

申请号：US17252884

申请日：2019-06-20

Applicant: Dow Global Technologies LLC ,  Rohm and Haas Company

Inventor： Kirk W. Limbach ,  Christopher D. Frick ,  Dmitry A. Krapchetov ,  Wen -Sheng Lee ,  Victor J. Sussman ,  Jeffrey A. Herron

IPC: B01J23/52 ,  B01J21/04 ,  B01J21/08 ,  B01J35/00 ,  C07C67/39

Abstract: A heterogeneous catalyst comprising a support and gold, wherein: (i) said support comprises alumina, (ii) said catalyst comprises from 0.1 to 5 wt % of gold, (iii) at least 90 wt % of the gold is in the outer 60% of catalyst volume, and (iv) particles of the catalyst have an average diameter from 200 microns to 30 mm; wherein weight percentages are based on weight of the catalyst.

公开(公告)号：US20200331840A1

公开(公告)日：2020-10-22

申请号：US16959232

申请日：2018-12-13

Applicant: Dow Global Technologies LLC ,  Rohm and Haas Company

Inventor： Christopher D. Frick ,  Jeffrey A. Herron ,  Kirk W. Limbach ,  Wen Sheng Lee ,  Victor J. Sussman

IPC: C07C67/39 ,  B01J21/08 ,  B01J21/06 ,  B01J23/52 ,  B01J23/44 ,  B01J35/02 ,  B01J19/18

Abstract: A method for preparing methyl methacrylate from methacrolein and methanol; said method comprising contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said support comprises silicon, and wherein said catalyst comprises from 0.1 to 40 mol % titanium and from 0.1 to 10 mol % of at least one noble metal.

公开(公告)号：US20200172465A1

公开(公告)日：2020-06-04

申请号：US16634414

申请日：2018-06-25

Applicant: Rohm and Haas Company ,  Dow Global Technologies LLC

Inventor： Kirk W. Limbach ,  Christopher D. Frick ,  Victor Sussman ,  Wen Sheng Lee

IPC: C07C67/39 ,  B01J35/02 ,  B01J23/52 ,  B01J23/44 ,  B01J21/04 ,  B01J35/00

Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns and at least 90 wt % of the noble metal is in the outer 50% of catalyst volume.

公开(公告)号：US20200148620A1

公开(公告)日：2020-05-14

申请号：US16632939

申请日：2018-06-25

Applicant: Dow Global Technologies LLC ,  Rohm and Haas Company

Inventor： Kirk W. Limbach ,  Dmitry A. Krapchetov ,  Christopher D. Frick ,  Daniel A. Hickman

IPC: C07C67/39

Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting in a reactor a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns, wherein oxygen concentration at a reactor outlet is from 0.5 to 7.5 mol % and wherein the reactor comprises a partition with the catalyst bed on a first side of the partition and with flow through the catalyst bed in a first direction and flow on a second side of the partition in an opposite direction.

公开(公告)号：US09969672B2

公开(公告)日：2018-05-15

申请号：US15521750

申请日：2015-10-07

Applicant: Rohm and Haas Company

Inventor： Kirk W. Limbach ,  Dmitri A. Kraptchetov ,  Christopher D. Frick

IPC: C07C67/00 ,  C07C67/44

CPC classification number: C07C67/44 ,  C07C67/39 ,  C07C69/54

Abstract: A process for the preparation of MMA via oxidative esterification in the presence of a catalyst comprising palladium, bismuth, and antimony.