公开(公告)号：US12071881B2

公开(公告)日：2024-08-27

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: B01J29/72 ,  B01J35/61 ,  B01J35/64 ,  B01J37/02 ,  F01N3/022 ,  F01N3/035 ,  F01N3/20 ,  F01N3/28

CPC classification number: F01N3/035 ,  B01J29/723 ,  B01J35/612 ,  B01J35/613 ,  B01J35/657 ,  B01J37/0215 ,  F01N3/022 ,  F01N3/2066 ,  F01N3/2803 ,  F01N2250/02 ,  F01N2260/14 ,  F01N2370/04 ,  F01N2510/063 ,  F01N2510/068

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：US11660586B2

公开(公告)日：2023-05-30

申请号：US17309015

申请日：2019-10-30

Applicant: BASF Corporation

Inventor： Matthias Peter ,  Karifala Dumbuya ,  Miriam Schubert ,  Ahmad Moini ,  Yu Dai ,  Stefan Maurer ,  Haiyang Zhu ,  Yi Liu ,  Wen-Mei Xue ,  Ming-Ming Wei ,  Maria Heenemann

IPC: B01J29/76 ,  B01D53/94 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08

CPC classification number: B01J29/763 ,  B01D53/9418 ,  B01J37/0215 ,  B01J37/04 ,  B01J37/082 ,  B01D2255/2065 ,  B01D2255/2092 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/20761 ,  B01D2255/30 ,  B01D2255/50

Abstract: A process for preparing a catalyst comprising a zeolitic material comprising copper, the process comprising (i) preparing an aqueous mixture comprising water, a zeolitic material comprising copper, a source of copper other than the zeolitic material comprising copper, and a non-zeolitic oxidic material selected from the group consisting of alumina, silica, titania, zirconia, ceria, a mixed oxide comprising one or more of Al, Si, Ti, Zr, and Ce and a mixture of two or more thereof; (ii) disposing the mixture obtained in (i) on the surface of the internal walls of a substrate comprising an inlet end, an outlet end, a substrate axial length extending from the inlet end to the outlet end and a plurality of passages defined by internal walls of the substrate extending therethrough; and optionally drying the substrate comprising the mixture disposed thereon; (iii) calcining the substrate obtained in (ii).