US 12,201,969 B2
Method of forming an inorganic oxide coating on a monolith article
Kaneshalingam Arulraj, Royston (GB); Peter Bellham, Royston (GB); Alexander De Bruin, Reading (GB); Guy Richard Chandler, Royston (GB); Chris Corrigan, Royston (GB); David Marvell, Royston (GB); and John Turner, Royston (GB)
Assigned to Johnson Matthey Public Limited Company, London (GB)
Filed by Johnson Matthey Public Limited Company, London (GB)
Filed on Aug. 17, 2022, as Appl. No. 17/820,290.
Claims priority of provisional application 63/260,644, filed on Aug. 27, 2021.
Prior Publication US 2023/0076492 A1, Mar. 9, 2023
Int. Cl. B01J 29/72 (2006.01); B01D 53/94 (2006.01); B01J 21/08 (2006.01); B01J 21/12 (2006.01); B01J 23/02 (2006.01); B01J 23/40 (2006.01); B01J 29/70 (2006.01); B01J 35/56 (2024.01); B01J 37/02 (2006.01); B01J 37/08 (2006.01)
CPC B01J 29/723 (2013.01) [B01D 53/94 (2013.01); B01J 21/08 (2013.01); B01J 21/12 (2013.01); B01J 23/02 (2013.01); B01J 23/40 (2013.01); B01J 29/7007 (2013.01); B01J 29/7015 (2013.01); B01J 35/56 (2024.01); B01J 37/0219 (2013.01); B01J 37/082 (2013.01); B01D 2255/2045 (2013.01); B01D 2255/2092 (2013.01); B01D 2255/50 (2013.01); B01D 2255/502 (2013.01); B01D 2255/9155 (2013.01); B01D 2255/9202 (2013.01)] 18 Claims
 
1. A method of forming an inorganic oxide coating on a monolith article for the treatment of an exhaust gas, the method comprising:
providing a porous monolith article comprising a plurality of channels for the passage of an exhaust gas, each channel having a gas-contacting surface;
spraying onto the gas-contacting surface, as a dry particulate aerosol, inorganic particles and a silicone resin to form a coating layer; and
calcining the coating layer to provide a coated monolith article.