	US 11,865,525 B2
	Zeolite with Cu and Pd co-exchanged in a composite
Matthew T. Caudle, Iselin, NJ (US)
Assigned to BASF Corporation, Florham Park, NJ (US)
Appl. No. 17/756,205
Filed by BASF Corporation, Florham Park, NJ (US)
PCT Filed Dec. 13, 2020, PCT No. PCT/US2020/064730 § 371(c)(1), (2) Date May 19, 2022, PCT Pub. No. WO2021/119565, PCT Pub. Date Jun. 17, 2021.
Claims priority of provisional application 62/947,824, filed on Dec. 13, 2019.
Prior Publication US 2022/0347661 A1, Nov. 3, 2022
Int. Cl. B01J 29/072 (2006.01); B01J 35/04 (2006.01); B01J 35/00 (2006.01); B01J 37/30 (2006.01); B01J 37/08 (2006.01); B01D 53/94 (2006.01); F01N 3/20 (2006.01); F01N 3/28 (2006.01); F01N 3/021 (2006.01); F01N 3/08 (2006.01)

CPC B01J 29/072 (2013.01) [B01D 53/9418 (2013.01); B01D 53/9472 (2013.01); B01J 35/0006 (2013.01); B01J 35/04 (2013.01); B01J 37/08 (2013.01); B01J 37/30 (2013.01); F01N 3/021 (2013.01); F01N 3/0842 (2013.01); F01N 3/2066 (2013.01); F01N 3/2803 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/20738 (2013.01); B01D 2255/20761 (2013.01); B01D 2255/50 (2013.01); B01D 2255/9032 (2013.01); B01D 2255/9155 (2013.01); B01J 2229/20 (2013.01); B01J 2229/38 (2013.01); F01N 2370/04 (2013.01); F01N 2610/02 (2013.01); F01N 2610/1453 (2013.01)]

24 Claims

1. A catalyst composition for low temperature trapping and selective catalytic reduction (SCR) of nitrogen oxides (NO_x) from an exhaust gas stream of a lean-burn engine, the catalyst composition comprising a zeolite comprising an ion-exchanged base metal and ion-exchanged palladium, wherein at least a portion of the ion-exchanged base metal and the ion-exchanged palladium are present in ionic form within the exchange sites of the zeolite.