Patents Assigned to Johnson Matthey Public Limited Company
  • Patent number: 12011690
    Abstract: An exhaust system for the treatment of an exhaust gas comprising a species to be treated, the system comprising: a first gas inlet for providing a flow of exhaust gas; a second gas inlet for providing a flow of heated gas; a plurality of sorbent beds for releasably storing the species; one or more catalysts for decomposing the species; first and second exhaust gas outlets; and a valve system configured to establish independently for each sorbent bed fluid communication in a first or second configuration, wherein: i) in the first configuration the flow of the exhaust gas from the first gas inlet contacts a sorbent bed for storing the species and then passes to the first gas outlet; and ii) in the second configuration the flow of heated gas from the second gas inlet contacts a sorbent bed for releasing the species, passes to one of the one or more catalysts and then passes to the second exhaust gas outlet; wherein the valve system is configured to ensure that at least one sorbent bed is in the first configurati
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: June 18, 2024
    Assignees: JOHNSON MATTHEY PUBLIC LIMITED COMPANY, JOHNSON MATTHEY CATALYSTS (GERMANY) GMBH
    Inventors: Joseph Fedeyko, Anthony Ferraro, Kenneth Koehler, Dirk Reichert, Harald Scherbel, Harald Schreiber, Andrew Scullard, Thomas Yeh
  • Patent number: 12011705
    Abstract: The present invention relates to a method of preparing a catalyst article comprising steps: (a) preparing a washcoat composition by combining at least the following components: a support material comprising a mixed oxide, a mixture of oxides or a molecular sieve comprising (i) alumina and (ii) silica and/or zirconia; a metal oxide sol comprising at least one of titania, silica or zirconia; a liquid medium; (b) applying the washcoat composition to a substrate to form a washcoating; and (c) drying and/or calcining the washcoating; wherein the method further comprises a step of impregnating the support material with a platinum group metal component. The prepared catalyst article may be suitable for the treatment of emissions from an internal combustion engine or a gas turbine, for example, the treatment of carbon monoxide and/or formaldehyde emissions from a natural gas fueled internal combustion engine or gas turbine.
    Type: Grant
    Filed: January 7, 2022
    Date of Patent: June 18, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventor: Kevin Doura
  • Patent number: 11986802
    Abstract: A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; and a first catalytic region on the substrate; wherein the first catalytic region comprises a first PGM component and a first alumina, wherein the first alumina is doped with a first dopant of at least 5 wt. %, and wherein the first dopant is selected from the group consisting of Zr, Ta, Mo, W, Ti, Nb, and a combination thereof.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: May 21, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Shuhei Nagaoka, Xiaorui Zhang
  • Patent number: 11980871
    Abstract: The present invention relates to a catalyst article for the exhaust system of a natural gas engine with improved sulphur and/or water tolerance. The catalyst article comprises a doped palladium-on-alumina catalyst, wherein the palladium-on-alumina catalyst is doped with manganese and/or zinc. The invention further relates to an exhaust gas treatment system, a natural gas combustion engine and to a method for the treatment of an exhaust gas from a natural gas combustion engine.
    Type: Grant
    Filed: October 6, 2022
    Date of Patent: May 14, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Moyahabo Hellen Chuma, Glenn Jones, Jane Ngima Mugo, Agnes Raj
  • Patent number: 11980868
    Abstract: The present invention relates to a method for the treatment of an exhaust gas comprising carbon monoxide (CO) and/or one or more volatile organic compounds (VOCs) using a PGM-free catalyst article comprising a mixed oxide of Mn, Cu, Mg, Al and La. The present invention also relates to an HVAC system comprising a PGM-free catalyst article.
    Type: Grant
    Filed: August 16, 2022
    Date of Patent: May 14, 2024
    Assignee: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Silvia Alcove Clave, Kevin Doura, Joseph Fedeyko
  • Patent number: 11975908
    Abstract: The use of a palladium-doped zeolite for the adsorption of volatile organic compounds is described wherein the zeolite has a CHA framework type and is polymer-bound. Such zeolites have been found to have particular utility as packaging materials for the adsorption of volatile organic compounds, such as those originating from organic matter.
    Type: Grant
    Filed: October 31, 2022
    Date of Patent: May 7, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Andrew William John Smith, Andrew Cornish, Han Xu, Jhonny Rodrigues Ramos
  • Patent number: 11959408
    Abstract: The present invention relates to a system for ammonia combustion and exhaust gas treatment, the system comprising: an internal combustion engine for combusting ammonia; and an exhaust system comprising an intake for receiving an exhaust gas from the combustion engine, an upstream injector for adding hydrogen gas to the exhaust gas and a downstream catalyst article, wherein the downstream catalyst article comprises a three-way catalyst (TWC) composition. The invention further relates to a method for the treatment of an exhaust gas from an ammonia internal combustion engine.
    Type: Grant
    Filed: February 15, 2023
    Date of Patent: April 16, 2024
    Assignee: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Kevin Doura, John Kilmartin, Jing Lu, Nicholas McNamara, Thomas Yeh
  • Patent number: 11958040
    Abstract: A method is described for preparing an eggshell catalyst comprising the steps of: (i) preparing a calcined shaped alkaline earth metal aluminate catalyst support, (ii) treating the calcined shaped alkaline earth metal aluminate support with a gas containing water vapour to form a hydrated support, (iii) with or without an intervening drying step, impregnating the hydrated support with an acidic solution containing one or more catalytic metal compounds and drying the impregnated support, (iv) calcining the dried impregnated support, to form a calcined catalyst having a catalytic metal oxide concentrated at the surface of the support and (v) optionally repeating steps (ii), (iii) and (iv).
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: April 16, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Mikael Carlsson, Mark Alexander Kent, Stefano Martinuzzi, Shanneal Readman, John West
  • Patent number: 11926527
    Abstract: A method is described for controlling a furnace containing a plurality of catalyst-containing tubes heated by a combustion gas generated by a plurality of burners, said method comprising the steps of: (i) measuring path-averaged combustion gas temperatures on multiple paths through the furnace using tunable diode laser absorption spectroscopy, (ii) periodically measuring temperatures of surfaces within the furnace to obtain periodic surface temperature information, (iii) entering the path-averaged combustion gas temperatures and periodic surface temperature information into a computer model of the furnace, said model comprising parameters for controlling the furnace; and (iv) using the computer model and the temperature information to obtain optimised parameters for controlling the furnace. A system for performing the method is also described.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: March 12, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Matthew John Cousins, Michael Davies, John David Pach
  • Patent number: 11904305
    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.
    Type: Grant
    Filed: May 6, 2022
    Date of Patent: February 20, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Daniel Avis, Alexander Nicholas Michael Green, Matthew Eben Harris, Carmelo Iacono, Caitlin Jenkins, Alanna Murphy
  • Patent number: 11885567
    Abstract: A method of recording images within a furnace using a thermal imaging camera comprising a bore scope connected to a digital camera unit is described, comprising the steps of: (a) inserting the borescope into the interior of the furnace, (b) collecting one of more images of the interior of the furnace using the thermal imaging camera with the borescope at a first position, and (c) moving the borescope from the first position to a second position and collecting one or more images of the interior of the furnace as the borescope is moved from the first position to the second position, wherein the borescope movement is guided by means of a guide device comprising a movable borescope mounting, mounted externally on the furnace.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: January 30, 2024
    Assignee: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Matthew John Cousins, Michael Davies, Andrew Johnson, Peter Stones, Paul White
  • Patent number: 11883805
    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.
    Type: Grant
    Filed: May 12, 2022
    Date of Patent: January 30, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Daniel Avis, Yannick Bidal, Alexander Nicholas Michael Green, Neil Greenham, Matthew Eben Harris
  • Patent number: 11873994
    Abstract: The present disclosure is directed to a system comprising a recuperated gas turbine engine with a catalytic combustor, and methods of operating the same, the catalytic combustor comprising: (a) an upstream section comprising an electrical heater and (b) a downstream catalyst section, wherein the upstream section and the downstream catalyst section are disposed adjacent to and in fluid communication with one another.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: January 16, 2024
    Assignees: Johnson Matthey Public Limited Company, Delta Motorsport Limited
    Inventors: Nick Carpenter, Guy Chandler, Jeremy Gidney, Scott Herring, Chris Morgan, Timothy O'Connell, Mark Wilksch
  • Patent number: 11857925
    Abstract: A catalyst article including a substrate with an inlet side and an outlet side, a first zone and a second zone, where the first zone includes a passive NOx adsorber (PNA), and an ammonia slip catalyst (ASC) comprising a platinum group metal on a support and a first SCR catalyst; where the second zone includes a catalyst selected from the group consisting of a diesel oxidation catalyst (DOC) and a diesel exotherm catalyst (DEC); and where the first zone is located upstream of the second zone. The first zone may include a bottom layer with a blend of: (1) the platinum group metal on a support and (2) the first SCR catalyst; and a top layer with a second SCR catalyst, the top layer located over the bottom layer.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: January 2, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Hai-Ying Chen, Joseph Fedeyko, Dongxia Liu, Jing Lu
  • Patent number: 11845065
    Abstract: A method of manufacturing a catalyst article, the method comprising: providing a complex of a polyphenol and a PGM, the polyphenol comprising an ester functional group, the PGM comprising palladium; providing a support material; applying the complex to the support material to form a loaded support material; disposing the loaded support material on a substrate; and heating the loaded support material to form nanoparticles of the PGM on the support material.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: December 19, 2023
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Qinghe Zheng, Jing Lu, Michael Howard
  • Patent number: 11845063
    Abstract: A method of manufacturing a catalyst article, the method comprising: providing a complex of a polyphenol and a PGM, the PGM comprising rhodium and/or platinum, the polyphenol comprising an ester functional group; providing a support material; applying the complex to the support material to form a loaded support material; disposing the loaded support material on a substrate; and heating the loaded support material to form nanoparticles of the PGM on the support material.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: December 19, 2023
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Qinghe Zheng, Jing Lu, Michael Howard
  • Patent number: 11794170
    Abstract: A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate; and a first catalytic region on the substrate; wherein the first catalytic region comprises a first PGM component and a first inorganic oxide, wherein the IR intensity ratio of bridge CO to atop CO on the PGM component is less than 3:1 under standard CO adsorption procedure.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: October 24, 2023
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Yuan Jing, Shuhei Nagaoka, Ken-ichi Shimizu, Takashi Toyao
  • Patent number: 11788450
    Abstract: A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst 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 supported on a first PGM support material, wherein the first PGM component comprises rhodium (Rh) and platinum (Pt); and wherein Pt and Rh has a weight ratio of at least 1:10.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: October 17, 2023
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Paul Millington, Maria C. Vlachou
  • Patent number: 11786885
    Abstract: A method of manufacturing a catalyst article, the method comprising: providing a slurry comprising a support material, palladium ions, alkaline-earth-metal ions and an organic compound, wherein the organic compound comprises a functional group selected from a sulfo group (—SO3H), a sulfonyl group (—S(?O)2—) and a sulfinyl group (—S(?O)—); disposing the slurry on a substrate; and heating the slurry to form nanoparticles of the palladium and nanoparticles of a sulfate of the alkaline earth metal on the support material.
    Type: Grant
    Filed: August 10, 2022
    Date of Patent: October 17, 2023
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Daniel Peter DePuccio, Kevin Charles Kistler, Dongxia Liu
  • Patent number: 11745173
    Abstract: A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst 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 first PGM support material, wherein the first catalytic region comprises up to 5 wt. % Sn.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: September 5, 2023
    Assignees: Johnson Matthey Public Limited Company, Johnson Matthey (Shanghai) Chemicals Limited
    Inventors: Hongyu Ji, Wataru Kurashige, Shuhei Nagaoka, Dongsheng Qiao, Zhou Shang, Xiaorui Zhang