公开(公告)号：US20190134617A1

公开(公告)日：2019-05-09

申请号：US16124268

申请日：2018-09-07

Applicant: BASF CORPORATION

Inventor： Wenyong Lin ,  Jaya Mohanan ,  Xinsheng Liu ,  John Hochmuth

IPC: B01J29/76 ,  B01J37/02 ,  B01D53/94 ,  F01N3/20 ,  B01J29/70 ,  F01N3/28 ,  F01N3/10 ,  B01J35/04 ,  B01J37/08

Abstract: The present disclosure generally provides catalysts, catalyst articles and catalyst systems including such catalyst articles. In particular, the catalyst composition includes a metal ion-exchanged molecular sieve ion-exchanged with at least one additional metal, which reduces the number of metal centers often present in metal promoted zeolite catalysts. Methods of making and using the catalyst composition are also provided, as well as emission treatment systems including a catalyst article coated with the catalyst composition. The catalyst article present in such emission treatment systems is useful to catalyze the reduction of nitrogen oxides in gas exhaust in the presence of a reductant while minimizing the amount of dinitrogen oxide emission.

公开(公告)号：US20180297014A1

公开(公告)日：2018-10-18

申请号：US15981160

申请日：2018-05-16

Applicant: BASF CORPORATION

Inventor： Jaya L. Mohanan ,  Gary A. Gramiccioni ,  John Hochmuth ,  Kenneth E. Voss

IPC: B01J23/10 ,  B01D53/94 ,  B01J21/06 ,  B01J21/04 ,  B01J29/76 ,  B01J35/00 ,  B01J35/02 ,  B01J35/04 ,  B01J37/04 ,  B01J37/02 ,  B01J37/08 ,  F01N3/20

CPC classification number: B01J23/10 ,  B01D53/94 ,  B01D53/9418 ,  B01D2251/2062 ,  B01D2251/2067 ,  B01D2255/206 ,  B01D2255/2061 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/2092 ,  B01D2255/50 ,  B01D2255/9155 ,  B01D2255/9202 ,  B01D2255/9205 ,  B01J21/04 ,  B01J21/066 ,  B01J29/763 ,  B01J35/0006 ,  B01J35/0013 ,  B01J35/0073 ,  B01J35/026 ,  B01J35/04 ,  B01J37/0211 ,  B01J37/0215 ,  B01J37/0236 ,  B01J37/0248 ,  B01J37/04 ,  B01J37/086 ,  F01N3/20 ,  F01N3/2066 ,  Y02C20/10

Abstract: Described is a catalyst composition suitable for use as a selective catalytic reduction catalyst, including small-pore molecular sieve particles having a pore structure and a maximum ring size of eight tetrahedral atoms and impregnated with a promoter metal, and metal oxide particles dispersed within the small-pore molecular sieve particles and external to the pore structure of the small-pore molecular sieve particles, wherein the metal oxide particles include one or more oxides of a transition metal or lanthanide of Group 3 or Group 4 of the Periodic Table. A method for preparing the catalyst, a method for selectively reducing nitrogen oxides, and an exhaust gas treatment system are also described.

公开(公告)号：US11077432B2

公开(公告)日：2021-08-03

申请号：US16124268

申请日：2018-09-07

Applicant: BASF CORPORATION

Inventor： Wenyong Lin ,  Jaya Lakshmi ,  Xinsheng Liu ,  John Hochmuth

IPC: B01J29/06 ,  B01J29/76 ,  B01D53/94 ,  F01N3/20 ,  B01J29/50 ,  B01J29/52 ,  B01J29/72 ,  B01J29/54 ,  B01J29/56 ,  B01J29/58 ,  B01J29/70 ,  B01J29/78 ,  B01J29/74 ,  B01J37/02 ,  B01J35/00 ,  B01J35/04 ,  B01J37/08 ,  F01N3/10 ,  F01N3/28

Abstract: The present disclosure generally provides catalysts, catalyst articles and catalyst systems including such catalyst articles. In particular, the catalyst composition includes a metal ion-exchanged molecular sieve ion-exchanged with at least one additional metal, which reduces the number of metal centers often present in metal promoted zeolite catalysts. Methods of making and using the catalyst composition are also provided, as well as emission treatment systems including a catalyst article coated with the catalyst composition. The catalyst article present in such emission treatment systems is useful to catalyze the reduction of nitrogen oxides in gas exhaust in the presence of a reductant while minimizing the amount of dinitrogen oxide emission.

公开(公告)号：US10471413B2

公开(公告)日：2019-11-12

申请号：US15981160

申请日：2018-05-16

Applicant: BASF CORPORATION

Inventor： Jaya L. Mohanan ,  Gary A. Gramiccioni ,  John Hochmuth ,  Kenneth E. Voss

IPC: B01D53/94 ,  B01J23/10 ,  B01J21/06 ,  B01J21/04 ,  B01J29/76 ,  B01J35/00 ,  B01J37/04 ,  B01J37/02 ,  B01J37/08 ,  F01N3/20 ,  B01J35/02 ,  B01J35/04

Abstract: Described is a catalyst composition suitable for use as a selective catalytic reduction catalyst, including small-pore molecular sieve particles having a pore structure and a maximum ring size of eight tetrahedral atoms and impregnated with a promoter metal, and metal oxide particles dispersed within the small-pore molecular sieve particles and external to the pore structure of the small-pore molecular sieve particles, wherein the metal oxide particles include one or more oxides of a transition metal or lanthanide of Group 3 or Group 4 of the Periodic Table. A method for preparing the catalyst, a method for selectively reducing nitrogen oxides, and an exhaust gas treatment system are also described.