公开(公告)号：US20220105493A1

公开(公告)日：2022-04-07

申请号：US17593163

申请日：2020-03-12

Applicant: BASF Corporation

Inventor： Yi LIU ,  Yipeng SUN ,  Donald Reeder ,  Brian T. JONES ,  Andreas R. MUNDING ,  Oliver SEEL ,  David SCHLERETH ,  Hao LI

IPC: B01J23/10 ,  B01J35/04 ,  B01J35/02 ,  B01J37/00 ,  B01J37/02 ,  B01J21/04 ,  B01J21/06 ,  B01J35/00 ,  B01D53/94 ,  F01N3/28

Abstract: The present disclosure provides binder compositions formed with a plurality of binder materials having differing mean particles, the binder compositions being useful to improve washcoat adhesion on a substrate. Adhesion can be improved related to an increase in the binder concentration without a significant or substantial increase in associated viscosity. Such binder compositions can comprise a first binder material formed of a plurality of particles having a first mean particle size and a second binder material formed of a plurality of particles having a second mean particle size, wherein a ratio of the first mean particle size to the second mean particle size about 2 or greater. The present disclosure further provides catalyst compositions, catalyst articles, and emission systems incorporating the binder compositions.

公开(公告)号：US20210293168A1

公开(公告)日：2021-09-23

申请号：US17250544

申请日：2019-08-30

Applicant: BASF Corporation

Inventor： David SCHLERETH ,  Hao LI ,  Stephen SIEMUND ,  Thomas SCHMITZ ,  Attilio SIANI ,  Florian WALTZ

IPC: F01N3/035 ,  F01N3/10 ,  F01N3/022 ,  B01J23/63

Abstract: The present invention relates to a four-way conversion catalyst for the treatment of an exhaust gas stream of a gasoline engine, the catalyst comprising a porous wall-flow filter substrate comprising an inlet end, an outlet end, a substrate axial length extending between the inlet end and the outlet end, and a plurality of passages defined by porous internal walls of the porous wallflow filter substrate, wherein the plurality of passages comprise inlet passages having an open inlet end and a closed outlet end, and outlet passages having a closed inlet end and an open outlet end, wherein the interface between the passages and the porous internal walls is defined by the surface of the internal walls; wherein the porous internal walls comprise pores which comprise an oxidic component comprising a first refractory metal oxide, said first refractory metal oxide comprising aluminum, said oxidic component having a platinum group metal content in the range of from 0 to 0.001 weight-% based on the total weight of the oxidic component; wherein the catalyst further comprises a first three-way conversion catalytic coating, at least weight-% thereof being comprised in the pores of the internal walls, said first three-way conversion catalytic coating comprising an oxygen storage compound and a platinum group metal supported on a second refractory metal oxide.