公开(公告)号：US20210379576A1

公开(公告)日：2021-12-09

申请号：US17303290

申请日：2021-05-26

Applicant: Johnson Matthey Public Limited Company ,  Johnson Matthey Catalysts (Germany) GmbH

Inventor： Nikki Jane AMOS-REICHERT ,  Daniel AVIS ,  Juergen BAUER ,  Yannick BIDAL ,  Guy Richard CHANDLER ,  Alexander Nicolas Michael GREEN ,  Neil GREENHAM ,  Matthew Eben HARRIS ,  Sofia LOPEZ-OROZCO ,  Joerg MUENCH ,  Paul Richard Phillips ,  Irene PIRAS

IPC: B01J37/00 ,  B01J29/76 ,  B01J37/08

Abstract: The present disclosure relates to a method for forming a catalyst article comprising: (a) forming a slurry having a solids content of up to 50 wt % by mixing together at least the following components a crystalline molecular sieve in an H+ or NH4+ form, an insoluble active metal precursor and an aqueous solvent at a temperature in the range 10 to 35° C.; (b) coating a substrate with the slurry formed in step (a); and (c) calcining the coated substrate formed in step (b) to form a catalyst layer on the substrate. The present disclosure further relates to a catalyst article, particularly a catalyst article which is suitable for use in the selective catalytic reduction of nitrogen oxides, and to an exhaust system.

公开(公告)号：US20220362754A1

公开(公告)日：2022-11-17

申请号：US17662377

申请日：2022-05-06

Applicant: Johnson Matthey Public Limited Company

Inventor： Daniel AVIS ,  Alexander Nicholas Michael GREEN ,  Matthew Eben HARRIS ,  Carmelo IACONO ,  Caitlin JENKINS ,  Alanna MURPHY

IPC: B01J29/78 ,  F01N3/28 ,  B01D53/94

Abstract: A catalytic composition for treating a NOx-containing exhaust gas, wherein the composition comprises a copper-substituted zeolite comprising: i) Ce in a total amount of about 0.1 to about 200 g/ft3; and ii) Mn in a total amount of about 0.1 to about 200 g/ft3.

公开(公告)号：US20210339234A1

公开(公告)日：2021-11-04

申请号：US17302346

申请日：2021-04-30

Applicant: Johnson Matthey Public Limited Company ,  Johnson Matthey Catalysts (Germany) GMBH

Inventor： Nikki Jane AMOS-REICHERT ,  Daniel AVIS ,  Juergen BAUER ,  Yannick BIDAL ,  Guy Richard CHANDLER ,  Alexander Nicholas Michael GREEN ,  Neil GREENHAM ,  Matthew Eben HARRIS ,  Sofia LOPEZ-OROZCO ,  Joerg Werner MUENCH ,  Paul Richard PHILLIPS ,  Irene PIRAS

IPC: B01J29/76 ,  B01J37/00 ,  B01J37/04 ,  B01J37/08 ,  B01J35/04 ,  F01N3/20 ,  F01N3/28

Abstract: The present disclosure relates to a method for forming a catalyst article comprising: (a) forming a plastic mixture having a solids content of greater than 50% by weight by mixing together a crystalline small pore or medium pore molecular sieve in an H+ or NH4+ form, an insoluble active metal precursor, an inorganic matrix component, an organic auxiliary agent, an aqueous solvent and optionally inorganic fibres; (b) moulding the plastic mixture into a shaped article; and (c) calcining the shaped article to form a solid catalyst body. The present disclosure further relates to a catalyst article, particularly a catalyst article which is suitable for use in the selective catalytic reduction of nitrogen oxides, and to an exhaust system.

公开(公告)号：US20230347326A1

公开(公告)日：2023-11-02

申请号：US18301310

申请日：2023-04-17

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： Daniel AVIS ,  Rafal BARAN ,  Gavin BROWN ,  Alexander GREEN ,  Neil GREENHAM ,  Matthew HARRIS ,  Oliver HEMMING ,  Carmelo IACONO ,  Caitlin JENKINS ,  Alanna MURPHY ,  Paul PHILLIPS

IPC: B01J29/76 ,  B01J23/72 ,  B01J35/00 ,  F01N3/20 ,  F01N3/28 ,  B01D53/94

CPC classification number: B01J29/7615 ,  B01J23/72 ,  B01J35/0006 ,  F01N3/208 ,  F01N3/2828 ,  B01D53/9418 ,  B01D53/9495 ,  B01D53/9472 ,  F01N2610/02 ,  F01N2370/04 ,  F01N2610/1453 ,  B01D2251/2062 ,  B01D2255/20738 ,  B01D2255/502 ,  B01D2255/20761 ,  B01D2255/9032

Abstract: A method of treating exhaust gas from a lean burn internal combustion engine is disclosed. The method comprises: introducing ammonia or an ammonia precursor into the exhaust gas upstream of an Fe-SCR catalyst, the Fe-SCR catalyst comprising iron and a zeolite; and contacting the exhaust gas with the Fe-SCR catalyst; wherein the amount of ammonia or ammonia precursor introduced into the exhaust gas upstream of the Fe-SCR catalyst is controlled to provide an ammonia-to-NOx molar ratio (ANR) in the exhaust gas contacting the Fe-SCR catalyst of from greater than 2 to 6.

公开(公告)号：US20220362753A1

公开(公告)日：2022-11-17

申请号：US17742530

申请日：2022-05-12

Applicant: Johnson Matthey Public Limited Company

Inventor： Daniel AVIS ,  Yannick BIDAL ,  Alexander Nicholas Michael GREEN ,  Neil GREENHAM ,  Matthew Eben HARRIS

IPC: B01J29/76 ,  F01N3/20

Abstract: A catalytic composition for treating a NOx-containing exhaust gas, wherein the composition comprises a copper-substituted small-pore zeolite comprising: i) Ce and/or La in a total amount of about 5 to about 400 g/ft3; and ii) Nd and/or Nb in a total amount of about 5 to about 400 g/ft3.