Patents by Inventor Alexander Nicholas Michael Green
Alexander Nicholas Michael Green has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240082828Abstract: 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 comprising an aluminosilicate zeolite having a SAR of greater than 100:1 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.Type: ApplicationFiled: August 18, 2023Publication date: March 14, 2024Inventors: Lucy CLOWES, Alexander Nicholas Michael GREEN, John TURNER, Sarah WARREN
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Publication number: 20240058751Abstract: The present invention relates to a catalyst composition. More particularly, the present invention relates to a catalyst composition comprising a low SAR zeolite, copper in an amount of at least 2 wt %; and a rare earth element. The present invention also relates to a method for the manufacture of a catalyst composition. The present invention further relates to a catalyst article comprising a catalyst composition and a method for the treatment of an exhaust gas which comprises contacting an exhaust gas with a catalyst article comprising a catalyst composition.Type: ApplicationFiled: July 20, 2023Publication date: February 22, 2024Inventors: Kaneshalingam ARULRAJ, Daniel Robert AVIS, Guy Richard CHANDLER, Alexander Nicholas Michael GREEN, Matthew Eben HARRIS, Oliver HEMMING, Carmelo IACONO, Alanna Susan MURPHY, Paul Richard PHILLIPS, Maria Pia RUGGERI
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Patent number: 11904305Abstract: 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.Type: GrantFiled: May 6, 2022Date of Patent: February 20, 2024Assignee: Johnson Matthey Public Limited CompanyInventors: Daniel Avis, Alexander Nicholas Michael Green, Matthew Eben Harris, Carmelo Iacono, Caitlin Jenkins, Alanna Murphy
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Patent number: 11883805Abstract: 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.Type: GrantFiled: May 12, 2022Date of Patent: January 30, 2024Assignee: Johnson Matthey Public Limited CompanyInventors: Daniel Avis, Yannick Bidal, Alexander Nicholas Michael Green, Neil Greenham, Matthew Eben Harris
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Patent number: 11826739Abstract: 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.Type: GrantFiled: April 30, 2021Date of Patent: November 28, 2023Inventors: 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
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Publication number: 20230130212Abstract: 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.Type: ApplicationFiled: October 20, 2022Publication date: April 27, 2023Inventors: 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
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Publication number: 20230077564Abstract: Catalyst compositions and methods of preparation comprising: exchanging a rare earth element into a molecular sieve; incorporating a promoter metal into the molecular sieve; wherein the rare earth element exchanging step and the promoter metal incorporation step are performed as separate steps.Type: ApplicationFiled: September 12, 2022Publication date: March 16, 2023Inventors: Daniel Robert AVIS, Alexander Nicholas Michael GREEN, Matthew Eben HARRIS, Oliver HEMMING, Loredana MANTAROSIE, Alanna Susan Murphy, Maria Pia RUGGERI
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Patent number: 11590482Abstract: Provided is a catalytic washcoat having a catalyst component and an alumina binder, wherein the catalyst component includes an aluminosilicate molecular sieve having a beta (BEA) and/or chabazite (CHA) framework, and about 1 to about 10 weight percent of a base metal component comprising iron and/or copper, wherein said weight percent is based on the weight of the aluminosilicate molecular sieve.Type: GrantFiled: March 11, 2019Date of Patent: February 28, 2023Assignee: Johnson Matthey Public Limited CompanyInventors: Stuart David Reid, Alexander Nicholas Michael Green, Guy Richard Chandler
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Publication number: 20220362754Abstract: 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.Type: ApplicationFiled: May 6, 2022Publication date: November 17, 2022Inventors: Daniel AVIS, Alexander Nicholas Michael GREEN, Matthew Eben HARRIS, Carmelo IACONO, Caitlin JENKINS, Alanna MURPHY
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Publication number: 20220362753Abstract: 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.Type: ApplicationFiled: May 12, 2022Publication date: November 17, 2022Inventors: Daniel AVIS, Yannick BIDAL, Alexander Nicholas Michael GREEN, Neil GREENHAM, Matthew Eben HARRIS
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Publication number: 20210339234Abstract: 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.Type: ApplicationFiled: April 30, 2021Publication date: November 4, 2021Inventors: 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
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Patent number: 11000836Abstract: SCR-active molecular-sieve based catalysts with improved low-temperature performance are made by heating a molecular-sieve in a non-oxidizing atmosphere with steam (hydrothermal treatment), or in a reducing atmosphere without steam (thermal treatment), at a temperature in the range of 600-900° C. for a time period from 5 minutes to two hours. The resulting SCR-active iron-containing molecular sieves exhibit a selective catalytic reduction of nitrogen oxides with NH3 or urea at 250° C. that is at least 50% greater than if the iron-containing molecular-sieve were calcined at 500° C. for two hours without performing the hydrothermal or thermal treatment.Type: GrantFiled: April 24, 2019Date of Patent: May 11, 2021Inventors: Guy Richard Chandler, Jillian Elaine Collier, Alexander Nicholas Michael Green, Desiree Duran-Martin, Paul Richard Phillips, Raj Rao Rajaram, Stuart David Reid
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Publication number: 20190247836Abstract: SCR-active molecular-sieve based catalysts with improved low-temperature performance are made by heating a molecular-sieve in a non-oxidizing atmosphere with steam (hydrothermal treatment), or in a reducing atmosphere without steam (thermal treatment), at a temperature in the range of 600-900° C. for a time period from 5 minutes to two hours. The resulting SCR-active iron-containing molecular sieves exhibit a selective catalytic reduction of nitrogen oxides with NH3 or urea at 250° C. that is at least 50% greater than if the iron-containing molecular-sieve were calcined at 500° C. for two hours without performing the hydrothermal or thermal treatment.Type: ApplicationFiled: April 24, 2019Publication date: August 15, 2019Inventors: Guy Richard CHANDLER, Jillian Elaine COLLIER, Alexander Nicholas Michael GREEN, Desiree DURAN-MARTIN, Paul Richard PHILLIPS, Raj Rao RAJARAM, Stuart David REID
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Patent number: 10272419Abstract: SCR-active molecular-sieve based catalysts with improved low-temperature performance are made by heating a molecular-sieve in a non-oxidizing atmosphere with steam (hydrothermal treatment), or in a reducing atmosphere without steam (thermal treatment), at a temperature in the range of 600-900° C. for a time period from 5 minutes to two hours. The resulting SCR-active iron-containing molecular sieves exhibit a selective catalytic reduction of nitrogen oxides with NH3 or urea at 250° C. that is at least 50% greater than if the iron-containing molecular-sieve were calcined at 500° C. for two hours without performing the hydrothermal or thermal treatment.Type: GrantFiled: February 27, 2015Date of Patent: April 30, 2019Assignee: Johnson Matthey Public Limited CompanyInventors: Guy Richard Chandler, Jillian Elaine Collier, Alexander Nicholas Michael Green, Desiree Duran-Martin, Paul Richard Phillips, Raj Rao Rajaram, Stuart David Reid
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Patent number: 10226762Abstract: Provided is a catalytic washcoat having a catalyst component and an alumina binder, wherein the catalyst component includes an aluminosilicate molecular sieve having a beta (BEA) and/or chabazite (CHA) framework, and about 1 to about 10 weight percent of a base metal component comprising iron and/or copper, wherein said weight percent is based on the weight of the aluminosilicate molecular sieve.Type: GrantFiled: June 15, 2015Date of Patent: March 12, 2019Assignee: Johnson Matthey Public Limited CompanyInventors: Stuart David Reid, Alexander Nicholas Michael Green, Guy Richard Chandler
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Patent number: 10179329Abstract: A catalyst article comprises an SCR catalyst and a NOx adsorber catalyst, where each of these catalysts comprise a metal molecular sieve, each with a different metal. The catalyst article can be close coupled with other components to give a NOX performance advantage from cold start to a combined DOC and SCRF system. Higher NOX conversion is also shown in under-floor location due to NOx storage before SCR light off and selective NH3 slip control, allowing higher NH3 fill levels. Systems comprising the catalyst article and methods of using the catalyst article to give improved hydrocarbon and carbon monoxide control, as well as ammonia slip control, are described. The systems can include flow-through or wall-flow monoliths.Type: GrantFiled: November 18, 2015Date of Patent: January 15, 2019Assignee: Johnson Matthey Public Limited CompanyInventors: Paul Richard Phillips, Guy Richard Chandler, Alexander Nicholas Michael Green, Matthew Eben Harris, James Alexander Wylie, Miroslaw Gall, Garry Adam Burgess
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Patent number: 10118127Abstract: Provided is a method for reducing N2O emissions in an exhaust gas comprising contacting an exhaust gas containing NH3 and an inlet NO concentration with an SCR catalyst composition containing small pore zeolite having an SAR of about 3 to about 15 and having about 1-5 wt. % of an exchanged transition metal.Type: GrantFiled: February 6, 2017Date of Patent: November 6, 2018Assignee: Johnson Matthey Public Limited CompanyInventors: Guy Richard Chandler, Hai-Ying Chen, Jillian Elaine Collier, Joseph Michael Fedeyko, Alexander Nicholas Michael Green
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Publication number: 20180297016Abstract: Provided is a catalyst for the selective reduction of NOx comprising a two molecular sieve materials having a CHA structure, wherein the first molecular sieve has a mean crystal size of about 0.01 to 1 ?m and the second molecular sieve has a mean crystal size of about 1-5 ?m, and wherein the first molecular sieve contains a first extra-framework metal, the second molecular sieve contains a second extra-framework metal, and wherein said first and second extra-framework metals are independently selected from the group consisting of cesium, copper, nickel, zinc, iron, tin, tungsten, molybdenum, cobalt, bismuth, titanium, zirconium, antimony, manganese, chromium, vanadium, niobium, and combinations thereof.Type: ApplicationFiled: June 18, 2018Publication date: October 18, 2018Inventors: Philip Gerald BLAKEMAN, Guy Richard CHANDLER, Hai-Ying CHEN, Debnath DE, Joseph Michael Fedeyko, Alexander Nicholas Michael GREEN, Wendy MANNING, Shadab MULLA
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Patent number: 9999876Abstract: Provided is a catalyst for the selective reduction of NOx comprising a two molecular sieve materials having a CHA structure, wherein the first molecular sieve has a mean crystal size of about 0.01 to 1 ?m and the second molecular sieve has a mean crystal size of about 1-5 ?m, and wherein the first molecular sieve contains a first extra-framework metal, the second molecular sieve contains a second extra-framework metal, and wherein said first and second extra-framework metals are independently selected from the group consisting of cesium, copper, nickel, zinc, iron, tin, tungsten, molybdenum, cobalt, bismuth, titanium, zirconium, antimony, manganese, chromium, vanadium, niobium, and combinations thereof.Type: GrantFiled: March 17, 2017Date of Patent: June 19, 2018Assignee: Johnson Matthey Public Limited CompanyInventors: Philip Gerald Blakeman, Guy Richard Chandler, Hai-Ying Chen, Debnath De, Joseph Michael Fedeyko, Alexander Nicholas Michael Green, Wendy Manning, Shadab Mulla
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Publication number: 20180023439Abstract: An exhaust system for a compression ignition engine comprising: a water adsorbent material; and a catalyst composition for treating an exhaust gas pollutant produced by the compression ignition engine; wherein the water adsorbent material is: (i) arranged to contact exhaust gas from the compression ignition engine before the catalyst composition; and (ii) in thermal communication with the catalyst composition.Type: ApplicationFiled: October 2, 2017Publication date: January 25, 2018Inventors: Guy Richard CHANDLER, Alexander Nicholas Michael GREEN, Paul Richard PHILLIPS, Andrew WALKER