公开(公告)号：WO2021028692A1

公开(公告)日：2021-02-18

申请号：PCT/GB2020/051937

申请日：2020-08-13

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： BELLHAM, Peter ,  CHIFFEY, Andrew ,  CLOWES, Lucy ,  HOTCHKISS, Thomas ,  MARVELL, David ,  TURNER, John ,  WARREN, Sarah

IPC: C04B35/195 ,  C04B35/565 ,  C04B38/00 ,  C04B41/45 ,  B01J21/12 ,  B01J23/72

Abstract: A vehicular exhaust filter (2) comprises a porous substrate having an inlet face and an outlet face with the porous substrate comprising inlet channels extending from the inlet face and outlet channels extending from the outlet face. The inlet channels and the outlet channels are separated by a plurality of filter walls having a porous structure. The vehicular exhaust filter (2) is loaded with a refractory powder having a tapped density before loading of less than 0.10 g/cm3 and the vehicular exhaust filter has a mass loading of the refractory powder of less than 10 g/l.

公开(公告)号：WO2023021265A1

公开(公告)日：2023-02-23

申请号：PCT/GB2022/052038

申请日：2022-08-03

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： ARULRAJ, Kaneshalingham ,  BELLHAM, Peter ,  CHANDLER, Guy ,  CHIFFEY, Andrew ,  COLE, Kieran John ,  CORRIGAN, Chris ,  MARVELL, David ,  MOREAU, Francois ,  TURNER, John

IPC: B01J35/04 ,  B01D53/92 ,  B01J37/02

Abstract: The disclosure relates to a method of forming a coated monolith article for the treatment of an exhaust gas. The method comprises the steps of: retaining a porous monolith article in a coating apparatus, the porous monolith article comprising a plurality of channels for the passage of an exhaust gas, each channel having a gas-contacting surface; depositing cementitious particles as a dry powder onto the gas-contacting surface of at least some of the channels; and reacting the cementitious particles with a liquid or gaseous reagent in situ within the porous monolith article to provide the coated monolith article.

公开(公告)号：WO2021165658A1

公开(公告)日：2021-08-26

申请号：PCT/GB2021/050361

申请日：2021-02-15

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： HOTCHKISS, Thomas ,  MARVELL, David ,  TURNER, John ,  WALTON, Mark

IPC: F01N3/021 ,  F01N3/035 ,  B01D46/24 ,  B01D53/94 ,  B01D53/92

Abstract: A method and apparatus (1) for treating a filter (2) for filtering particulate matter from 5 exhaust gas and a treated filter (2) are described. A reservoir (3) containing a dry powder (4) is provided. A vacuum generator (6) establishes a primary gas flow through a porous structure of the filter (2) by applying a pressure reduction to an outlet face of the filter (2). A spray device (7) receives the dry powder (4) from a transport device (8) and sprays the dry powder (4) towards the inlet face of the filter (2). A controller (9) is configured to control 10 operation of at least the vacuum generator (6) and the spray device (7). The dry powder (4) comprises or consists of a metal compound for forming by thermal decomposition a metal oxide.

公开(公告)号：WO2023026022A1

公开(公告)日：2023-03-02

申请号：PCT/GB2022/052104

申请日：2022-08-12

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： ARULRAJ, Kaneshalingham ,  BELLHAM, Peter ,  DE BRUIN, Alexander ,  CHANDLER, Guy Richard ,  CORRIGAN, Chris ,  MARVELL, David ,  TURNER, John

IPC: B01J37/02 ,  B01J35/04 ,  F01N3/022 ,  F01N3/035 ,  C04B38/00

Abstract: A method of forming an inorganic oxide coating on a monolith article is disclosed. The coated monolith article is suitable for the treatment of an exhaust gas. The method comprises spraying, as a dry particulate aerosol, inorganic particles and a silicone resin to form a coating layer. The present invention also provides an uncalcined porous monolith article for use in forming a monolith article for the treatment of an exhaust gas. The uncalcined monolith article comprises a dry particulate composition comprising inorganic particles and a silicone resin.