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：US20200070133A1

公开(公告)日：2020-03-05

申请号：US16556475

申请日：2019-08-30

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： Yannick BIDAL ,  Joseph FEDEYKO ,  Alexander GREEN ,  Matthew HARRIS ,  Jing LU ,  Nicholas McNAMARA

IPC: B01J29/78 ,  B01J29/76 ,  B01J29/46 ,  B01J29/48 ,  B01J35/00 ,  B01D53/94 ,  F01N3/20

Abstract: A catalyst composition for treating an exhaust gas, the catalyst composition comprising a molecular sieve, the molecular sieve comprising exchanged copper and exchanged manganese.

公开(公告)号：US20230211323A1

公开(公告)日：2023-07-06

申请号：US17754778

申请日：2020-10-16

Applicant: Johnson Matthey Public Limited Company

Inventor： Andrew Francis CHIFFEY ,  Kieran COLE ,  Oliver COOPER ,  Christopher DALY ,  Jonas EDVARDSSON ,  Lee GILLBERT ,  Alexander GREEN ,  Neil GREENHAM ,  Robert HANLEY ,  Caitlin Lucy JENKINS ,  Per MARSH ,  David MICALLEF ,  Francois MOREAU ,  George PLATT ,  Paul Richard PHILLIPS ,  James WYLIE

IPC: B01J23/58 ,  B01J23/44 ,  B01J21/12 ,  B01J29/76 ,  B01J35/00 ,  B01J35/10 ,  F01N3/28 ,  B01D53/94

CPC classification number: B01J23/58 ,  B01J23/44 ,  B01J21/12 ,  B01J29/763 ,  B01J35/0006 ,  B01J35/1061 ,  F01N3/2828 ,  B01D53/9436 ,  B01D53/9472 ,  B01D53/9418 ,  F01N2370/04 ,  F01N2330/30 ,  F01N2510/0684 ,  B01D2255/9035 ,  B01D2258/012 ,  B01D2255/9155 ,  B01D2255/50 ,  B01D2255/20761 ,  B01D2255/20738 ,  B01D2255/2073 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/2065 ,  B01D2255/9202 ,  B01D2251/2062

Abstract: A composite, zone-coated, dual-use ammonia (AMOX) and nitric oxide oxidation catalyst (12) comprises: a substrate (5) having a total length L and a longitudinal axis and having a substrate surface extending axially between a first substrate end (I) and a second substrate end (O); two or more catalyst washcoat zones (1; 2) comprised of a first catalyst washcoat layer (9) comprising a refractory metal oxide support material and one or more platinum group metal components supported thereon and a second catalyst washcoat layer (11) different from the first catalyst washcoat layer (9) and comprising a refractory metal oxide support material and one or more platinum group metal components supported thereon, which two or more catalyst washcoat zones (1; 2) being arranged axially in series on and along the substrate surface, wherein a first catalyst washcoat zone (1) having a length L1, wherein L1 48.8 g/l (>0.8 g/in3), wherein the particulate metal oxide is an aluminosilicate zeolite including at least one of copper, iron and manganese, wherein a total platinum group metal loading in the first catalyst washcoat zone (1) defined in grams of platinum group metal per litre of substrate volume (g/l) is different from the total platinum group metal loading in the second catalyst washcoat zone (2).

公开(公告)号：US20220281752A1

公开(公告)日：2022-09-08

申请号：US17652777

申请日：2022-02-28

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： Kaneshalingam ARULRAJ ,  Guy R. CHANDLER ,  Jillian COLLIER ,  Raquel GARCIA ,  Alexander GREEN ,  Nicholas MCNAMARA ,  Paul PHILLIPS ,  Maria Pia RUGGERI ,  Alessandro TURRINA

IPC: C01B39/48 ,  F01N3/20 ,  B01J29/70 ,  B01J29/72 ,  B01J29/78

Abstract: The present invention is directed to a method of preparing a synthetic crystalline material, designated as JMZ-12, with a framework built up by the disorder AEI and CHA structures, substantially free of framework phosphorous and prepared preferably in the absence of halides such as fluoride ions. Such method comprises the step of heating a reaction mixture under crystallization conditions for a sufficient period to form a disordered zeolite having both CHA and AEI topologies, wherein the reaction mixture comprises at least one source of aluminum, at least one source of silicon, a source of alkaline or alkaline-earth cations, and a structure directing agent containing at least one source of quaternary ammonium cations and at least one source of alkyl-substituted piperidinium cations in a molar ratio of 0.20 to about 1.4. The resulting zeolites are useful as catalysts, particularly when used in combination with exchanged transition metal(s) and, optionally, rare earth metal(s).