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公开(公告)号:US20210379576A1
公开(公告)日:2021-12-09
申请号:US17303290
申请日:2021-05-26
发明人: 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
摘要: 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.
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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
发明人: 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
摘要: 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:US20180280877A1
公开(公告)日:2018-10-04
申请号:US15939419
申请日:2018-03-29
发明人: Hai-Ying CHEN , Joseph Michael FEDEYKO , Neil GREENHAM , Mikael LARSSON , Jing LU , Per Marsh , David MICALLEF , Andrew Newman
IPC分类号: B01D53/94 , F01N3/20 , F01N13/00 , F01N3/035 , B01J23/652 , B01J23/648 , B01J23/42 , B01J23/44 , B01D53/58 , B01J21/06 , B01J23/22 , B01J23/30
摘要: 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:US20230035318A1
公开(公告)日:2023-02-02
申请号:US17757052
申请日:2020-12-10
摘要: 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
发明人: Daniel AVIS , Yannick BIDAL , Alexander Nicholas Michael GREEN , Neil GREENHAM , Matthew Eben HARRIS
摘要: 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
发明人: Hai-Ying CHEN , Joseph FEDEYKO , Neil GREENHAM , Matthew HARRIS , Jing LU
摘要: 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:US20200215520A1
公开(公告)日:2020-07-09
申请号:US16705713
申请日:2019-12-06
发明人: Neil GREENHAM , Jing LU , Andrew NEWMAN
IPC分类号: 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
摘要: 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
发明人: Neil GREENHAM , Jing LU , Andrew NEWMAN
IPC分类号: B01J29/76 , B01J23/42 , B01J29/40 , B01J35/00 , B01J37/02 , B01J37/08 , B01D53/94 , F01N3/20 , F01N3/28 , F01N13/00
摘要: 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:US20230130212A1
公开(公告)日:2023-04-27
申请号:US18048306
申请日:2022-10-20
发明人: 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分类号: B01J29/80 , B01J29/76 , B01J29/68 , B01J27/053 , B01J37/30
摘要: 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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公开(公告)号:US20210299643A1
公开(公告)日:2021-09-30
申请号:US17301109
申请日:2021-03-25
发明人: Yannick BIDAL , Hai-Ying CHEN , Joseph FEDEYKO , Neil GREENHAM , Matthew HARRIS , Jing LU
摘要: 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 comprising a Cu- and Mn-exchanged molecular sieve; 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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