	US 12,257,569 B2
	Catalyzed particulate filter for soot removal from engine exhaust
Lioudmila Nossova, Ottawa (CA); and Gianni Caravaggio, Ottawa (CA)
Assigned to HER MAJESTY THE QUEEN IN RIGHT OF CANADA AS REPRESENTED BY THE MINISTER OF NATURAL RESOURCES, Ottawa (CA)
Appl. No. 17/595,279
Filed by HER MAJESTY THE QUEEN IN RIGHT OF CANADA AS REPRESENTED BY THE MINISTER OF NATURAL RESOURCES, Ottawa (CA)
PCT Filed Apr. 16, 2020, PCT No. PCT/CA2020/050506 § 371(c)(1), (2) Date Nov. 12, 2021, PCT Pub. No. WO2020/257919, PCT Pub. Date Dec. 30, 2020.
Claims priority of provisional application 62/865,356, filed on Jun. 24, 2019.
Prior Publication US 2022/0241757 A1, Aug. 4, 2022
Int. Cl. B01J 23/50 (2006.01); B01J 6/00 (2006.01); B01J 21/06 (2006.01); B01J 37/04 (2006.01); B01J 37/08 (2006.01); F01N 3/10 (2006.01)

CPC B01J 23/50 (2013.01) [B01J 6/001 (2013.01); B01J 21/066 (2013.01); B01J 37/04 (2013.01); B01J 37/08 (2013.01); F01N 3/10 (2013.01)]

5 Claims

1. A catalyzed particulate filter for soot removal from engine exhaust, said particulate filter is loaded with a silver-zirconia catalyst xAg/ZrO₂, wherein x is the mole fraction of Ag in %, and wherein the silver-zirconia catalyst is prepared by citric acid-assisted sol-gel method and calcinating at 500° C. for about 10 hours.