US 12,390,795 B2
Preparation of supported metal nanoparticles using polyamine for three-way catalysis application
Qinghe Zheng, Wayne, PA (US); Jing Lu, Wayne, PA (US); and Michael Howard, Wayne, PA (US)
Assigned to JOHNSON MATTHEY PUBLIC LIMITED COMPANY, London (GB)
Filed by JOHNSON MATTHEY PUBLIC LIMITED COMPANY, London (GB)
Filed on Mar. 8, 2022, as Appl. No. 17/653,937.
Claims priority of provisional application 63/200,642, filed on Mar. 19, 2021.
Prior Publication US 2022/0297095 A1, Sep. 22, 2022
Int. Cl. B01J 23/46 (2006.01); B01D 53/94 (2006.01); B01J 21/04 (2006.01); B01J 23/10 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 35/00 (2006.01); B01J 37/00 (2006.01); B01J 37/03 (2006.01); B01J 37/04 (2006.01); B01J 37/08 (2006.01); F01N 3/10 (2006.01); F01N 3/28 (2006.01); F01N 13/18 (2010.01); B01J 35/56 (2024.01)
CPC B01J 23/464 (2013.01) [B01D 53/945 (2013.01); B01J 21/04 (2013.01); B01J 23/10 (2013.01); B01J 23/42 (2013.01); B01J 23/44 (2013.01); B01J 35/19 (2024.01); B01J 37/0009 (2013.01); B01J 37/038 (2013.01); B01J 37/04 (2013.01); B01J 37/082 (2013.01); F01N 3/101 (2013.01); F01N 3/2803 (2013.01); F01N 3/2842 (2013.01); F01N 13/18 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/2092 (2013.01); B01D 2255/407 (2013.01); B01D 2255/908 (2013.01); B01D 2255/9155 (2013.01); B01J 35/56 (2024.01); F01N 2370/04 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method of manufacturing a catalyst article, the method comprising:
providing a complex of a polyamine and a PGM;
providing a support material;
applying the complex to the support material to form a loaded support material;
disposing the loaded support material on a substrate; and
heating the loaded support material to form nanoparticles of the PGM on the support material;
wherein the complex has a PGM to amino group ratio of from 1:5 to 1:7.