Patents Assigned to Johnson Matthey Public Limited Company
  • Coated articles having high kNOx/kSOx ratios for selective catalytic reduction
    Patent number: 10618000
    Abstract: Articles comprising a catalyst film comprising VOx, MoO3 or WO3, and TiO2 deposited on a substrate are disclosed. The articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases. Methods for producing such articles deposit a catalyst film on the substrate to form a coated substrate, which is then calcined. When used in an SCR process, the coated articles have enhanced activity for NOx conversion, reduced activity for SOx conversion, or both. Light-weight, coated articles having high catalyst loads can be fabricated at the same or reduced dimensions when compared with laminated articles, and increased kNOx/kSOx ratios are available even from coated articles having relatively thin catalyst films. The articles should have particular value for power plant operations, where coal and high-sulfur fuels are commonly used and controlling sulfur trioxide generation is critical.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: April 14, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Paul Joseph Andersen, Maria Brandmair, Silvia Alcove Clave, Rodney Foo, Bruce Gomersall, Michael Nash, Alison Mary Wagland
  • NOx adsorber catalyst
    Patent number: 10603655
    Abstract: A lean NOx trap catalyst and its use in an emission treatment system for internal combustion engines is disclosed. The lean NOx trap catalyst comprises a first layer, a second layer, and a third layer.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: March 31, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Guy Richard Chandler, Nuria Lastra-Calvo, Paul Richard Phillips, Jonathan Radcliffe, Stuart David Reid, Byron Truscott
  • Three layer NOadsorber catalyst
    Patent number: 10596550
    Abstract: A lean NOx trap catalyst and its use in an emission treatment system for internal combustion engines is disclosed. The lean NOx trap catalyst comprises a first layer, a second layer, and a third layer.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: March 24, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Guy Richard Chandler, Paul Richard Phillips, Stuart David Reid, Byron Truscott
  • Exhaust system without a DOC having an ASC acting as a DOC in a system with an SCR catalyst before the ASC
    Patent number: 10589261
    Abstract: Catalyst articles having a first zone containing a first SCR catalyst and a second zone containing an ammonia slip catalyst (ASC), where the ammonia slip catalyst contains a second SCR catalyst and an oxidation catalyst, and the ASC has DOC functionality, where the first zone is located on the inlet side of the substrate and the second zone is located in the outlet side of the substrate are disclosed. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases, in reducing the amount of ammonia slip and in oxidizing organic residues. Exhaust systems containing the catalyst articles and methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced and hydrocarbon are oxidized by the ASC catalyst, are also described.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: March 17, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventor: Mikael Larsson
  • Method for preparing a sorbent
    Patent number: 10589253
    Abstract: A method is described for preparing a sorbent including the steps of: (i) mixing together a particulate copper sulphide material, a particulate support material and one or more binders, (ii) shaping the mixture, and (iii) drying the shaped mixture to form a dried sorbent.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: March 17, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Matthew James Evans, Matthew David Gwydion Lunn, Martin Graham Partridge, Christopher John Young
  • Desulphurisation material comprising copper supported on zinc oxide
    Patent number: 10569251
    Abstract: A particulate desulfurization material includes one or more copper compounds supported on a zinc oxide support material, wherein the desulfurization material has a copper content in the range 0.1 to 5.0% by weight and a tapped bulk density ?1.55 kg/l. The material is obtained by (i) mixing a powdered copper compound with a particulate zinc support material comprising zinc oxide and one or more precursors that form zinc oxide upon calcination, and one or more binders to form a copper-containing composition, (ii) shaping the copper-containing composition by granulation, and (iii) drying and calcining the resulting granulated material.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: February 25, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Norman Macleod, Gordon Edward Wilson
  • Oxidation catalyst for a compression ignition engine
    Patent number: 10569257
    Abstract: An oxidation catalyst for treating an exhaust gas from a compression ignition engine, which oxidation catalyst comprises: a substrate; a first washcoat region comprising palladium (Pd) and a first support material comprising cerium oxide; and a second washcoat region comprising platinum (Pt) and a second support material.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: February 25, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Andrew Francis Chiffey, Neil Robert Collins, John Benjamin Goodwin, Francois Moreau, Paul Richard Phillips
  • Catalyst for oxidising ammonia
    Patent number: 10569264
    Abstract: A catalyst for oxidising ammonia comprises a selective catalytic reduction (SCR) catalyst and a composite heterogeneous extruded honeycomb having longitudinally extending parallel channels, which channels being defined in part by channel walls having a total longitudinal length, wherein the channel walls comprise a pore structure including a periodic arrangement of porous cells embedded in an inorganic matrix component, at least some of which porous cells are defined at least in part by an active interface layer of a catalytically active material comprising a precious metal supported on particles of a support material.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: February 25, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Juergen Bauer, Mikael Larsson, Jing Lu
  • Oxidation catalyst for a diesel engine exhaust
    Patent number: 10561985
    Abstract: An oxidation catalyst is described for treating an exhaust gas produced by a diesel engine comprising a catalytic region and a substrate, wherein the catalytic region comprises a catalytic material comprising: a copper (Cu) component; a platinum group metal (PGM) selected from the group consisting of (i) platinum (Pt), (ii) palladium (Pd) and (iii) platinum (Pt) and palladium (Pd); and a support material, which is a refractory oxide comprising alumina; wherein the platinum group metal (PGM) and the copper (Cu) component is each supported on the support material.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: February 18, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventor: Mark Robert Feaviour
  • Catalyst and process for nitric oxide reduction in a waste gas
    Patent number: 10562011
    Abstract: In order to improve the lifetime of an SCR catalyst in the waste gas purification by means of the SCR process of waste gas of a biomass combustion plant, the catalyst comprises a sacrificial component selected from a zeolite and/or a clay mineral, in particular halloysite. During operation, catalyst poisons contained in the waste gas, in particular alkali metals, are absorbed by the sacrificial component so that catalytically active centers of the catalyst are not blocked by the catalyst poisons.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: February 18, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventor: Maria Theresia Brandmair
  • Oxidation catalyst for diesel engines
    Patent number: 10562013
    Abstract: This oxidation catalyst for diesel engines is divided into an upstream-side catalyst layer and a downstream-side inner catalyst layer in the flow direction of the exhaust gas, and a downstream-side outer catalyst layer is additionally formed so as to cover the surface of the downstream-side inner catalyst layer. The upstream-side catalyst layer and the downstream-side inner catalyst layer contain Pd, and the downstream-side outer catalyst layer contains Pt. The amounts of Pt and Pd contained in the upstream-side catalyst layer and the amounts of Pt and Pd contained in the downstream-side inner catalyst layer are constantly set to certain values, while the amount of Pt contained in the downstream-side outer catalyst layer is set to a value which enables the oxidation efficiency to be at a predetermined value or higher.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: February 18, 2020
    Assignees: YANMAR CO., LTD., JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Ken Kawabe, Shohei Hoshino, Masahito Shibata, Yoshihito Hashimoto
  • Integrated process for the production of formaldehyde-stabilised urea
    Patent number: 10550076
    Abstract: A process for producing formaldehyde-stabilised urea is described comprising generating a synthesis gas, subjecting the synthesis gas to water-gas shift to form a shifted gas; recovering carbon dioxide from the shifted gas; synthesising methanol from the carbon dioxide-depleted synthesis gas; subjecting recovered methanol to oxidation; subjecting the methanol synthesis off-gas to methanation; synthesising ammonia from the ammonia synthesis gas and recovering the ammonia; reacting ammonia and recovered carbon dioxide stream to form a urea stream; and stabilising the urea by mixing the urea stream and a stabiliser prepared using the recovered formaldehyde, wherein a portion of the synthesis gas by-passes either the one or more of the water-gas shift reactors, carbon dioxide removal unit, or water-gas shift reactors and the carbon dioxide removal unit used in the process.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: February 4, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Ola Erlandsson, Andreas Erik Johan Magnusson, Kate McFarlane, John David Pach, Daniel Thomas Sheldon, Darren Ward
  • Exhaust system with a modified lean NOx trap
    Patent number: 10539055
    Abstract: An exhaust system for treating an exhaust gas from an internal combustion engine is disclosed. The system comprises a modified lean NOx trap (LNT), a urea injection system, and an ammonia-selective catalytic reduction catalyst. The modified LNT comprises a first layer and a second layer. The first layer comprises a NOx adsorbent component and one or more platinum group metals. The second layer comprises a diesel oxidation catalyst zone and an NO oxidation zone. The diesel oxidation catalyst zone comprises a platinum group metal, a zeolite, and optionally an alkaline earth metal. The NO oxidation zone comprises a platinum group metal and a carrier. The modified LNT stores NOx at temperatures below about 200° C. and releases at temperatures above about 200° C. The modified LNT and a method of using the modified LNT are also disclosed.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: January 21, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Paul Richard Phillips, Stuart David Reid, Daniel Swallow, James Alexander Wylie
  • Silica-modified catalyst supports
    Patent number: 10537877
    Abstract: A method for preparing a silica-modified catalyst support is described comprising: (i) applying an alkyl silicate solution to a porous support material in an amount to produce a silica content of the silica-modified catalyst support, expressed as Si, in the range 0.25 to 15% by weight, (ii) drying the resulting silicate-modified support and recovering a first alcoholic solution, (iii) optionally treating the dried silicate-modified support with water, drying the resulting water-treated support and recovering a second alcoholic solution, and (iv) calcining the dried material to form the silica-modified catalyst support, wherein the first alcoholic solution contains ?10 vol % water and at least a portion of the first alcoholic solution is mixed with alkyl silicate to form the alkyl silicate solution.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: January 21, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Alejandro Martin Antonini, Richard John Mercer, Jose Angel Ruiz Adan
  • Catalyst and method of preparation
    Patent number: 10537879
    Abstract: A method of making a supported catalytic species comprising an alloy of at least two metals, comprises the steps of: (i) combining a particulate support material, a solution of a first metal compound, a solution of a second metal compound, and a solution of an alkaline precipitating agent to form a slurry mixture; (ii) agitating the resultant mixture; and (iii) contacting the solids with a reducing agent, wherein the first metal in the first metal compound and the second metal in the second metal compound is each independently selected from the group consisting of gold, palladium, platinum, rhodium, iridium, silver, osmium and ruthenium; and wherein the first metal is not the same as the second metal.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: January 21, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: David Bergeal, Andrew Francis Chiffey, Peter Johnston, Francois Moreau, Paul Richard Phillips
  • Disordered molecular sieve supports for the selective catalytic reduction of NO
    Patent number: 10532349
    Abstract: A catalyst for selective catalytic reduction of NOx having one or more transition metals selected from Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir, Pt, and mixtures thereof supported on a support, wherein the support has a molecular sieve having at least one intergrowth phase having at least two different small-pore, three-dimensional framework structures.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: January 14, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Paul J. Andersen, John Leonello Casci, Hai-Ying Chen, Joseph M. Fedeyko
  • NOtrap
    Patent number: 10532344
    Abstract: A NOx trap catalyst is disclosed. The NOx trap catalyst comprises a noble metal, a NOx storage component, a support, and a first ceria-containing material. The first ceria-containing material is pre-aged prior to incorporation into the NOx trap catalyst, and may have a surface area of less than 80 m2/g. The invention also includes exhaust systems comprising the NOx trap catalyst, and a method for treating exhaust gas utilizing the NOx trap catalyst.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: January 14, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Guy Richard Chandler, Paul Richard Phillips, Stuart David Reid, Wolfgang Strehlau, Daniel Swallow
  • NOVEL FORMS OF APREMILAST
    Publication number: 20200010416
    Abstract: The present disclosure is directed to novel forms of apremilast and pharmaceutical compositions comprising any of the novel forms of apremilast. Also provided are processes for the preparation of novel forms of apremilast.
    Type: Application
    Filed: August 29, 2019
    Publication date: January 9, 2020
    Applicant: Johnson Matthey Public Limited Company
    Inventor: Padmini KAVURU
  • Oxidation catalyst for treating a natural gas emission
    Patent number: 10525412
    Abstract: A catalytic material for treating an exhaust gas produced by a natural gas engine, which catalytic material comprises a molecular sieve and a platinum group metal (PGM) supported on the molecular sieve, wherein the molecular sieve has a framework comprising silicon, oxygen and optionally germanium, and has a content of heteroatom T-atoms is ?about 0.20 mol %.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: January 7, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Hai-Ying Chen, Joseph Michael Fedeyko, Jing Lu, Paul Joseph Andersen, Arthur Joseph Reining, Rita Aiello
  • Ammonia slip catalyst designed to be first in an SCR system
    Patent number: 10518255
    Abstract: Catalyst articles having an ammonia slip catalyst (ASC) comprising a blend of platinum on a support with low ammonia storage and a first SCR catalyst, and a second catalyst, such as a diesel oxidation catalyst, a diesel exotherm catalyst (DEC), a NOx absorber, a selective catalytic reduction/passive NOx adsorber (SCR/PNA), a cold-start catalyst (CSC) or a three-way catalyst (TWC) are disclosed. The catalyst articles can also contain one or two additional SCR catalysts. The catalysts can be present in one of various configurations. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: December 31, 2019
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Mikael Larsson, David Micallef