公开(公告)号：US20230129815A1

公开(公告)日：2023-04-27

申请号：US17906265

申请日：2021-03-30

Applicant: BASF CORPORATION

Inventor： Edgar Viktor HUENNEKES ,  Nicholas MCGUIRE ,  Petra CORDES ,  Kevin BEARD ,  Jan Martin BECKER ,  John K HOCHMUTH ,  Kenneth E VOSS ,  Joseph A PATCHETT ,  Andreas R MUNDING

IPC: B01D53/94 ,  B01J29/72 ,  B01J37/02

Abstract: The present invention relates to a process for preparing a catalyst for the selective catalytic reduction of nitrogen oxide comprising, among other steps, preparing a second aqueous mixture comprising water and an iron salt; and disposing the second mixture on the substrate obtained according to (ii), comprising a coating comprising a zeolitic material comprising copper, over y % of the substrate axial length from the inlet end to the outlet end of the substrate, wherein y is in the range of from 10 to x, obtaining a substrate comprising, in a first zone, the coating comprising a zeolitic material comprising copper and over y % of the substrate axial length an iron salt; and, if x > y, in a second zone extending from y % to x % of the substrate axial length from the inlet end to the outlet end, the coating comprising a zeolitic material comprising copper.

公开(公告)号：US20230141207A1

公开(公告)日：2023-05-11

申请号：US17907554

申请日：2021-03-31

Applicant: BASF CORPORATION

Inventor： Edgar Viktor HUENNEKES ,  Petra CORDES ,  Jan Martin BECKER ,  Kevin BEARD ,  Nicholas MCGUIRE ,  Jaya L LAKSHMI ,  John K HOCHMUTH ,  Joseph A PATCHETT ,  Kenneth E VOSS

IPC: B01J29/76 ,  B01J29/80 ,  B01J21/08 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01J37/08 ,  B01J37/04 ,  B01D53/94 ,  F01N3/20 ,  F01N3/28 ,  F01N3/035

CPC classification number: B01J29/7615 ,  B01D53/9418 ,  B01D53/9472 ,  B01J21/08 ,  B01J29/80 ,  B01J35/04 ,  B01J35/0006 ,  B01J37/04 ,  B01J37/088 ,  B01J37/0228 ,  B01J37/0236 ,  B01J37/0246 ,  F01N3/035 ,  F01N3/2066 ,  F01N3/2828 ,  B01J2029/062

Abstract: The present invention relates to a catalyst for the selective catalytic reduction of nitrogen oxide, the catalyst comprising a first coating comprising a 12-membered ring pore zeolitic material comprising a first metal which is one or more of copper and iron, and a second coating comprising an 8-membered ring pore zeolitic material comprising a second metal which is one or more of copper and iron.

公开(公告)号：US20220288563A1

公开(公告)日：2022-09-15

申请号：US17594838

申请日：2020-05-05

Applicant: BASF Corporation

Inventor： Edgar Viktor HUENNEKES ,  Petra CORDES ,  Jan Martin BECKER ,  Ruediger WOLFF ,  Joseph A. PATCHETT ,  Nicholas MCGUIRE ,  Edith SCHNEIDER ,  Kevin BEARD

IPC: B01J23/22 ,  B01J23/30 ,  B01J23/10 ,  B01J21/08 ,  B01J35/00 ,  B01J35/02 ,  B01J37/04 ,  B01J37/02 ,  B01J37/08

Abstract: The present invention relates to an aqueous suspension comprising water, a source of one or more of a vanadium oxide and a tungsten oxide, and particles of an oxidic support; wherein the particles of the aqueous suspension exhibit a polymodal particle size distribution characterized by a particle size distribution curve comprising a first peak with a maximum M(I) in the range of from 0.5 to 15 micrometers and a second peak with a maximum M(II) in the range of from 1 to 40 micrometers, wherein (M(I)/μm):(M(II)/μm)