公开(公告)号：US20220154611A1

公开(公告)日：2022-05-19

申请号：US17594005

申请日：2020-04-15

Applicant: BASF Corporation

Inventor： Matthias PETER ,  Susanne STIEBELS ,  Andreas ZEEB ,  Claudia ZABEL ,  Maria HEENEMANN

IPC: F01N3/035 ,  F01N3/022 ,  F01N3/20 ,  F01N3/28 ,  B01J35/10 ,  B01J37/02 ,  B01J29/72

Abstract: The present invention relates to a selective catalytic reduction catalyst comprising a porous wall-flow filter substrate; wherein in the pores of the porous internal walls and on the surface of the porous internal walls, the catalyst comprises a selective catalytic reduction coating comprising a selective catalytic reduction component comprising a zeolitic material comprising one or more of copper and iron. The present invention further relates to a process for preparing a selective catalytic reduction catalyst using particles of a carbon-containing additive and an aqueous mixture comprising said particles of a carbon-containing additive.

公开(公告)号：US20220250005A1

公开(公告)日：2022-08-11

申请号：US17661058

申请日：2022-04-28

Applicant: BASF Corporation

Inventor： Kenneth E. VOSS ,  Kevin A. HALLSTROM ,  Sanath V. KUMAR ,  Susanne STIEBELS ,  Marius VAARKAMP

IPC: B01D53/94 ,  F01N3/023 ,  F01N3/08 ,  F01N3/20

Abstract: Zoned diesel oxidation catalysts containing a higher precious metal loading in the inlet zone that the outlet zone and an equal or shorter length inlet zone are described. Emission treatment systems and methods of remediating nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons using zoned diesel oxidation catalysts are also described.

公开(公告)号：US20210379530A1

公开(公告)日：2021-12-09

申请号：US17309016

申请日：2019-10-30

Applicant: BASF CORPORATION

Inventor： Matthias PETER ,  Susanne STIEBELS ,  Karifala DUMBUYA ,  Claudia ZABEL

IPC: B01D53/94 ,  F01N3/10 ,  F01N3/20 ,  F01N3/021 ,  F01N3/28 ,  B01J29/76 ,  B01J21/06 ,  B01J37/04 ,  B01J37/08 ,  B01J35/10 ,  B01J35/02 ,  B01J37/02 ,  B01J21/12 ,  B01J35/00 ,  B01J35/04 ,  B01J21/18

Abstract: A selective catalytic reduction catalyst for the treatment of an exhaust gas stream of a passive ignition engine, the catalyst comprising a porous wall-flow filter substrate comprising an inlet end, an outlet end, a substrate axial length (w) extending between the inlet end and the outlet end, and a plurality of passages defined by porous internal walls of the porous wall flow filter substrate; wherein the catalyst further comprises a first coating, said first coating extending over x % of the substrate axial length from the inlet end toward the outlet end of the substrate, x being in the range of from 10 to 100, wherein the first coating comprises copper and an 8-membered ring pore zeolitic material; wherein the catalyst further comprises a second coating, the second coating extending over y % of the substrate axial length from the outlet end toward the inlet end of the substrate, y being in the range of from 20 to 90, wherein the second coating comprises copper, and optionally an 8-membered ring pore zeolitic material; wherein the catalyst optionally further comprises a third coating; wherein x+y is at least 90; wherein y % of w from the outlet end toward the inlet end of the substrate define the outlet zone of the coated substrate and (100−y) % of w from the inlet end toward the outlet end of the substrate define the inlet zone of the coated substrate; wherein the ratio of the loading of copper in the inlet zone, Cu(in), calculated as CuO, relative to the loading of copper in the outlet zone, Cu(out), calculated as CuO, Cu(in):Cu(out), is less than 1:1.