公开(公告)号：US20210388747A1

公开(公告)日：2021-12-16

申请号：US17309116

申请日：2019-10-24

Applicant: BASF Corporation

Inventor： Wen-Mei XUE ,  Ivan PETROVIC ,  Jeff H. YANG ,  Stanley A. ROTH ,  Yuejin LI

IPC: F01N3/20 ,  B01J29/72 ,  B01J35/02 ,  B01J37/03 ,  B01J35/04 ,  B01J37/02 ,  B01J35/00

Abstract: The present disclosure provides catalyst compositions for NOx conversion and catalytic articles incorporating such catalyst compositions. Certain catalyst compositions include a zeolite with a silica-to-alumina ratio from 5 to 20 and sufficient Cu exchanged into cation sites of the zeolite such that the zeolite has a Cu/Al ratio of 0.1 to 0.5 and a CuO loading of 1 to 15 wt. %; and a copper trapping component in a concentration in the range of 1 to 20 wt. %, the copper trapping component including a plurality of particles having a particle size of about 0.5 to 20 microns. Certain catalyst compositions include, as the copper trapping component, alumina present as a plurality of alumina particles with a D90 particle size distribution in the range of 0.5 microns to 20 microns.

公开(公告)号：US20180163596A1

公开(公告)日：2018-06-14

申请号：US15574910

申请日：2016-05-18

Applicant: BASF CORPORATION

Inventor： Alfred PUNKE ,  Gerd GRUBERT ,  Marcus HILGENDORFF ,  Torsten NEUBAUER ,  Matthew CAUDLE ,  Yuejin LI

IPC: F01N3/28 ,  B01D53/94 ,  B01J23/44 ,  B01J23/42 ,  B01J37/02 ,  B01J29/76 ,  B01J29/78 ,  B01J35/04 ,  B01J37/04 ,  B01J37/08 ,  B01J35/00 ,  F01N3/20 ,  F01N3/035 ,  F01N13/00

CPC classification number: F01N3/2803 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/944 ,  B01D53/9477 ,  B01D53/9481 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/50 ,  B01D2255/9032 ,  B01D2255/9155 ,  B01D2255/9202 ,  B01J23/42 ,  B01J23/44 ,  B01J29/763 ,  B01J29/783 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/0234 ,  B01J37/0236 ,  B01J37/0244 ,  B01J37/04 ,  B01J37/08 ,  F01N3/035 ,  F01N3/2066 ,  F01N13/009 ,  F01N2510/068 ,  F01N2510/0682 ,  Y02T10/24

Abstract: The present invention relates to catalyzed soot filter comprising a porous wall flow substrate, a catalyst for selective catalytic reduction (SCR), a palladium component, and a platinum component, the wall flow 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 channels defined by internal walls of the wall flow substrate, wherein the plurality of channels comprise inlet channels having an open inlet end and a closed outlet end, and outlet channels having a closed inlet end and an open outlet end, and the SCR catalyst is provided on the entire surface of the inlet channel walls and on at least a portion of the surface of the pores within the channel walls underneath the surface of the channel walls coated with the SCR catalyst.