US 11,745,173 B2
Tin incorporated catalysts for gasoline engine exhaust gas treatments
Hongyu Ji, Shanghai (CN); Wataru Kurashige, Tochigi (JP); Shuhei Nagaoka, Tochigi (JP); Dongsheng Qiao, Shanghai (CN); Zhou Shang, Shanghai (CN); and Xiaorui Zhang, Tochigi (JP)
Assigned to Johnson Matthey Public Limited Company, London (GB); and Johnson Matthey (Shanghai) Chemicals Limited, Shanghai (CN)
Filed by JOHNSON MATTHEY PUBLIC LIMITED COMPANY, London (GB); and JOHNSON MATTHEY (SHANGHAI) CHEMICALS LIMITED, Shanghai (CN)
Filed on Mar. 18, 2021, as Appl. No. 17/249,924.
Claims priority of provisional application 63/009,606, filed on Apr. 14, 2020.
Claims priority of application No. 202010240337.5 (CN), filed on Mar. 31, 2020.
Prior Publication US 2021/0299647 A1, Sep. 30, 2021
Int. Cl. B01J 21/04 (2006.01); B01J 21/06 (2006.01); B01J 21/08 (2006.01); B01J 21/12 (2006.01); B01J 23/10 (2006.01); B01J 23/14 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/46 (2006.01); B01J 23/62 (2006.01); B01J 23/63 (2006.01); B01J 35/00 (2006.01); B01J 35/02 (2006.01); F01N 3/10 (2006.01); F01N 3/28 (2006.01); B01J 37/02 (2006.01)
CPC B01J 37/0201 (2013.01) [B01J 21/066 (2013.01); B01J 23/42 (2013.01); B01J 23/464 (2013.01); B01J 35/0006 (2013.01); B01J 35/023 (2013.01); F01N 3/101 (2013.01); F01N 3/2803 (2013.01); F01N 2370/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A catalyst composition comprising a platinum group metal (PGM) component and a support material, wherein the catalyst composition comprises up to 2 wt. % Sn, and wherein the support material is an oxygen storage capacity (OSC) material and an inorganic oxide;
wherein the OSC material is cerium oxide, a ceria-zirconia mixed oxide, an alumina-ceria-zirconia mixed oxide, or a combination thereof; and
wherein the inorganic oxide is selected from the group consisting of alumina, magnesia, silica, zirconia, lanthana, neodymia, praseodymia, yttria, and mixed oxides or composite oxides thereof.