	US 12,134,088 B2
	Catalytic composition with added copper trapping component for NOx abatement
Yuejin Li, Iselin, NJ (US)
Assigned to BASF Mobile Emissions Catalysts LLC, Iselin, NJ (US)
Appl. No. 17/309,117
Filed by BASF MOBILE EMISSIONS CATALYSTS LLC, Iselin, NJ (US)
PCT Filed Oct. 24, 2019, PCT No. PCT/US2019/057806 § 371(c)(1), (2) Date Apr. 27, 2021, PCT Pub. No. WO2020/092113, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/846,050, filed on May 10, 2019.
Claims priority of provisional application 62/753,188, filed on Oct. 31, 2018.
Prior Publication US 2022/0001371 A1, Jan. 6, 2022
Int. Cl. B01J 35/56 (2024.01); B01J 21/04 (2006.01); B01J 29/72 (2006.01); B01J 35/40 (2024.01); B01J 37/00 (2006.01); B01J 37/02 (2006.01); B01J 37/08 (2006.01); F01N 3/20 (2006.01)

CPC B01J 35/56 (2024.01) [B01J 21/04 (2013.01); B01J 29/723 (2013.01); B01J 35/40 (2024.01); B01J 37/0036 (2013.01); B01J 37/0244 (2013.01); B01J 37/0246 (2013.01); B01J 37/08 (2013.01); F01N 3/2066 (2013.01); B01J 37/0248 (2013.01); F01N 2330/06 (2013.01); F01N 2330/30 (2013.01); F01N 2370/04 (2013.01); F01N 2510/0684 (2013.01)]

23 Claims

1. A catalyst article comprising:

a wall-flow filter substrate; and

a catalyst composition coated on the wall-flow filter substrate,

wherein the catalyst composition comprises:

a zeolite with sufficient copper (Cu) exchanged into cation sites of the zeolite such that the zeolite has a Cu/Al ratio ranging from 0.1 to 0.5 and a CuO loading ranging from 1 wt. % to 15 wt. % based on a total weight of the zeolite; and

a copper trapping component in an amount ranging from about 1 wt. % to about 20 wt. % based on the weight of the Cu-exchanged zeolite; and

wherein the copper trapping component comprises a plurality of particles having a D90 particle size ranging from about microns 0.5 to about 20 microns, and the copper trapping component comprises non-dispersible alumina having an agglomerate size of D₁₀>0.1 microns and is substantially free of any active metal associated therewith.