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公开(公告)号：US20180280877A1
公开(公告)日：2018-10-04
申请号：US15939419
申请日：2018-03-29
Applicant: Johnson Matthey Public Limited Company
Inventor： Hai-Ying CHEN , Joseph Michael FEDEYKO , Neil GREENHAM , Mikael LARSSON , Jing LU , Per Marsh , David MICALLEF , Andrew Newman
IPC: B01D53/94 , F01N3/20 , F01N13/00 , F01N3/035 , B01J23/652 , B01J23/648 , B01J23/42 , B01J23/44 , B01D53/58 , B01J21/06 , B01J23/22 , B01J23/30
Abstract: A catalyst article including a substrate with an inlet end and an outlet end, a first zone and a second zone, where the first zone comprises: a) an ammonia slip catalyst (ASC) bottom layer comprising a platinum group metal on a support; and b) an SCR layer comprising a second SCR catalyst, the SCR layer located over the ASC bottom layer; where the second zone comprises a catalyst (“second zone catalyst”) selected from the group consisting of a diesel oxidation catalyst (DOC) and a diesel exotherm catalyst (DEC); wherein the ASC bottom layer extends into the second zone; and where the first zone is located upstream of the second zone. The ASC bottom layer may include a blend of: (1) the platinum group metal on a support and (2) a first SCR catalyst.
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公开(公告)号：US20210339234A1
公开(公告)日：2021-11-04
申请号：US17302346
申请日：2021-04-30
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
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.
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公开(公告)号：US20200215520A1
公开(公告)日：2020-07-09
申请号：US16705713
申请日：2019-12-06
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Neil GREENHAM , Jing LU , Andrew NEWMAN
IPC: B01J29/76 , B01J37/02 , B01D53/94 , B01J29/72 , B01J35/04 , B01J29/44 , F01N13/00 , B01J23/42 , B01J29/40 , B01J35/00 , B01J37/08 , F01N3/20 , F01N3/28
Abstract: A catalytic article for treating an exhaust gas stream containing particulate matter, hydrocarbons, CO, and ammonia, the article may include: (a) a substrate having an inlet end and an outlet end defining an axial length; (b) a first catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve; and (c) a second catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve.
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公开(公告)号：US20180280945A1
公开(公告)日：2018-10-04
申请号：US15938202
申请日：2018-03-28
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Neil GREENHAM , Jing LU , Andrew NEWMAN
IPC: B01J29/76 , B01J23/42 , B01J29/40 , B01J35/00 , B01J37/02 , B01J37/08 , B01D53/94 , F01N3/20 , F01N3/28 , F01N13/00
Abstract: A catalytic article for treating an exhaust gas stream containing particulate matter, hydrocarbons, CO, and ammonia, the article may include: (a) a substrate having an inlet end and an outlet end defining an axial length; (b) a first catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve; and (c) a second catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve.
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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
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.
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Patent Agency Ranking
公开(公告)号：US20230035318A1
公开(公告)日：2023-02-02
申请号：US17757052
申请日：2020-12-10
Applicant: Johnson Matthey Public Limited Company
Inventor： Alexander Nicholas GREEN , Neil GREENHAM , Matthew Eben HARRIS
Abstract: A catalytic article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component and a support; a second catalytic region comprising a second PGM component on a support with low ammonia storage and a first SCR catalyst; and wherein the first catalytic region is covered by at least another catalytic region.
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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
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.
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公开(公告)号：US20190283011A1
公开(公告)日：2019-09-19
申请号：US16352902
申请日：2019-03-14
Applicant: Johnson Matthey Public Limited Company
Inventor： Hai-Ying CHEN , Joseph FEDEYKO , Neil GREENHAM , Matthew HARRIS , Jing LU
Abstract: The invention relates to a catalytic article comprising a substrate having an inlet and an outlet; a first coating comprising a blend of: (1) platinum on a support, and (2) a first SCR catalyst; and a second coating comprising a second SCR catalyst; wherein the support comprises at least one of a zeolite or a SiO2—Al2O3 mixed oxide. The platinum may be fixed on the support in solution.
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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
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).
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公开(公告)号：US20230130212A1
公开(公告)日：2023-04-27
申请号：US18048306
申请日：2022-10-20
Applicant: Johnson Matthey Public Limited Company
Inventor： Daniel Robert AVIS , Gavin BROWN , Alba CASTANON RODRIGUEZ , Alexander Nicholas Michael GREEN , Neil GREENHAM , Matthew Eben HARRIS , Oliver HEMMING , Carmelo IACONO , Caitlin Lucy JENKINS , Alanna Susan MURPHY , Paul Richard PHILLIPS
IPC: B01J29/80 , B01J29/76 , B01J29/68 , B01J27/053 , B01J37/30
Abstract: Catalyst compositions and methods of preparation comprising: preparing a promoter metal-molecular sieve catalyst composition comprising a promoter metal and a molecular sieve; and incorporating an iron salt into the promoter metal-molecular sieve catalyst composition.
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