Patents by Inventor Rainer Leppelt
Rainer Leppelt 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: 20230323802Abstract: An exhaust gas treatment system includes in order: an intake for receiving an exhaust gas from a lean burn combustion engine; an injector for the provision of a nitrogenous reductant; a close-coupled vanadium-containing SCR catalyst composition; one or more downstream PGM-containing oxidation catalyst compositions, wherein the close-coupled vanadium-containing SCR catalyst composition includes cerium in a Ce:V molar ratio of greater than 0.3.Type: ApplicationFiled: April 10, 2023Publication date: October 12, 2023Inventors: Christopher DALY, Rainer LEPPELT, Joerg Werner MUENCH, Andrew David NEWMAN, Irene PIRAS, Agnes RAJ, Dominic Florian SANTI, Nicholas SPENCER, Andrew STONOR
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Publication number: 20230249162Abstract: The present invention relates to a titania-based selective catalytic reduction (SCR) catalyst article which shows comparable or better performance to those which contain vanadium. In particular, the invention relates to the provision of a titania-based SCR catalyst article comprising ceria and niobia and to methods of making these catalysts.Type: ApplicationFiled: February 6, 2023Publication date: August 10, 2023Inventors: Rainer LEPPELT, Joerg Werner MUENCH, Irene PIRAS
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Patent number: 11602736Abstract: Methods and compositions related to a selective catalytic reduction catalyst comprising iron and vanadium, wherein the vanadium is present as (1) one or more vanadium oxides, and (2) metal vanadate of the form FexMyVO4 where x=0.2 to 1 and y=1?x, and where M comprises one or more non-Fe metals when y>0.Type: GrantFiled: March 6, 2020Date of Patent: March 14, 2023Assignee: Johnson Matthey Public Limited CompanyInventors: Zuharia Arshad, Kaneshalingam Arulraj, Guy Chandler, Rainer Leppelt, Andrew Newman, Paul Phillips, Oliver Rowe, Christopher Smith, Nicholas Spencer, Isabel Tingay, Rob Walker, Oliver Hemming, Agnes Raj
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Patent number: 11291975Abstract: In order to specify a catalytic converter, especially SCR catalytic converter, with maximum catalytic activity, this catalytic converter has at least one catalytically active component and additionally at least one porous inorganic filler component having meso- or macroporosity. The organic porous filler component has a proportion of about 5 to 50% by weight. More particularly, a diatomaceous earth or a pillared clay material is used as the porous inorganic filler component.Type: GrantFiled: May 20, 2019Date of Patent: April 5, 2022Assignee: Johnson Matthey Public Limited CompanyInventors: Juergen Bauer, Ralf Dotzel, Joerg Walter Jodlauk, Rainer Leppelt, Joerg Werner Muench
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Patent number: 11225895Abstract: A catalyst article for treating a flow of a combustion exhaust gas comprises: a catalytically active substrate comprising one or more channels extending along an axial length thereof through which, in use, a combustion exhaust gas flows, the one or more channels having a first surface for contacting a flow of combustion exhaust gas; wherein the substrate is formed of an extruded vanadium-containing SCR catalyst material, wherein a first layer is disposed on at least a portion of the first surface, wherein the first layer comprises a washcoat of an ammonia slip catalyst composition comprising one or more platinum group metals supported on a particulate metal oxide support material, and wherein a layer comprising a washcoat of SCR catalyst composition is disposed on a surface in the one or more channels, wherein at least the portion of the first surface on which the first layer is disposed comprises a compound of copper, iron, cerium or zirconium or a mixture of any two or more thereof.Type: GrantFiled: March 22, 2019Date of Patent: January 18, 2022Assignee: Johnson Matthey Public Limited CompanyInventors: Kaneshalingam Arulraj, Guy Richard Chandler, Rainer Leppelt, Andrew Newman
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Publication number: 20200306734Abstract: Methods and compositions related to a selective catalytic reduction catalyst comprising iron and vanadium, wherein the vanadium is present as (1) one or more vanadium oxides, and (2) metal vanadate of the form FexMyVO4 where x=0.2 to 1 and y=1?x, and where M comprises one or more non-Fe metals when y>0.Type: ApplicationFiled: March 6, 2020Publication date: October 1, 2020Inventors: Zuharia Arshad, Kaneshalingam Arulraj, Guy Chandler, Rainer Leppelt, Andrew Newman, Paul Phillips, Oliver Rowe, Christopher Smith, Nicholas Spencer, Isabel Tingay, Rob Walker, Oliver Hemming, Agnes Raj
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Patent number: 10500572Abstract: An extruded, solid honeycomb body comprises a copper-promoted, small pore, crystalline molecular sieve catalyst for converting oxides of nitrogen in the presence of a reducing agent, wherein the crystalline molecular sieve contains a maximum ring size of eight tetrahedral atoms, which extruded, solid honeycomb body comprising: 20-50% by weight matrix component comprising diatomaceous earth, wherein 2-20 weight % of the extruded, solid honeycomb body is diatomaceous earth; 80-50% by weight of the small pore, crystalline molecular sieve ion-exchanged with copper; and 0-10% by weight of inorganic fibres.Type: GrantFiled: March 22, 2018Date of Patent: December 10, 2019Assignee: Johnson Matthey Catalysts (Germany) GmbHInventors: Juergen Bauer, Ralf Dotzel, Joerg Walter Jodlauk, Rainer Leppelt, Joerg Werner Muench
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Publication number: 20190299198Abstract: Provided is a catalyst composition for treating exhaust gas comprising a blend of a first component and second component, wherein the first component is an aluminosilicate or ferrosilicate molecular sieve component wherein the molecular sieve is either in H+ form or is ion exchanged with one or more transition metals, and the second component is a vanadium oxide supported on a metal oxide support selected from alumina, titania, zirconia, ceria, silica, and combinations thereof. Also provided are methods, systems, and catalytic articles incorporating or utilizing such catalyst blends.Type: ApplicationFiled: April 5, 2019Publication date: October 3, 2019Inventors: Juergen BAUER, Ralf DOTZEL, Joerg JODLAUK, Rainer LEPPELT, Joerg MUENCH, Irene PIRAS, Gudmund SMEDLER
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Publication number: 20190301334Abstract: A catalyst article for treating a flow of a combustion exhaust gas comprises: a catalytically active substrate comprising one or more channels extending along an axial length thereof through which, in use, a combustion exhaust gas flows, the one or more channels having a first surface for contacting a flow of combustion exhaust gas; wherein the substrate is formed of an extruded vanadium-containing SCR catalyst material, wherein a first layer is disposed on at least a portion of the first surface, wherein the first layer comprises a washcoat of an ammonia slip catalyst composition comprising one or more platinum group metals supported on a particulate metal oxide support material, and wherein a layer comprising a washcoat of SCR catalyst composition is disposed on a surface in the one or more channels, wherein at least the portion of the first surface on which the first layer is disposed comprises a compound of copper, iron, cerium or zirconium or a mixture of any two or more thereof.Type: ApplicationFiled: March 22, 2019Publication date: October 3, 2019Inventors: Kaneshalingam Arulraj, Guy Richard Chandler, Rainer Leppelt, Andrew Newman
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Publication number: 20190270070Abstract: In order to specify a catalytic converter, especially SCR catalytic converter, with maximum catalytic activity, this catalytic converter has at least one catalytically active component and additionally at least one porous inorganic filler component having meso- or macroporosity. The organic porous filler component has a proportion of about 5 to 50% by weight. More particularly, a diatomaceous earth or a pillared clay material is used as the porous inorganic filler component.Type: ApplicationFiled: May 20, 2019Publication date: September 5, 2019Inventors: Juergen Bauer, Ralf Dotzel, Joerg Walter Jodlauk, Rainer Leppelt, Joerg Werner Muench
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Patent number: 10300461Abstract: In order to specify a catalytic converter, especially SCR catalytic converter, with maximum catalytic activity, this catalytic converter has at least one catalytically active component and additionally at least one porous inorganic filler component having meso- or macroporosity. The organic porous filler component has a proportion of about 5 to 50% by weight. More particularly, a diatomaceous earth or a pillared clay material is used as the porous inorganic filler component.Type: GrantFiled: January 23, 2015Date of Patent: May 28, 2019Assignee: Johnson Matthey Public Limited CompanyInventors: Juergen Bauer, Ralf Dotzel, Joerg Walter Jodlauk, Rainer Leppelt, Joerg Werner Muench
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Patent number: 10252252Abstract: Provided is a catalyst composition for treating exhaust gas comprising a blend of a first component and second component, wherein the first component is an aluminosilicate or ferrosilicate molecular sieve component wherein the molecular sieve is either in H+ form or is ion exchanged with one or more transition metals, and the second component is a vanadium oxide supported on a metal oxide support selected from alumina, titania, zirconia, cella, silica, and combinations thereof. Also provided are methods, systems, and catalytic articles incorporating or utilizing such catalyst blends.Type: GrantFiled: August 16, 2013Date of Patent: April 9, 2019Assignee: Johnson Matthey Public Limited CompanyInventors: Juergen Bauer, Ralf Dotzel, Joerg Jodlauk, Rainer Leppelt, Joerg Muench, Irene Piras, Gudmund Smedler
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Patent number: 10137433Abstract: A catalyst with a porous, ceramic support body having a porosity which is formed by pores in at least a part of the ceramic support body, and which furthermore has a catalytically active washcoat coating applied to the ceramic support body, which catalytically active washcoat coating having a layer thickness, comprises a permanent catalytically inactive impregnation comprising at least one catalytically inactive inorganic component, and wherein the permanent inactive impregnation has a layer thickness and is present at least partially between a surface of the porous ceramic support body and the catalytically active washcoat coating is present in the pores of the ceramic support body in a region with reduced porosity underneath the surface of the ceramic support body.Type: GrantFiled: December 2, 2016Date of Patent: November 27, 2018Assignee: JOHNSON MATTHEY CATALYSTS (GERMANY) GMBHInventors: Rainer Leppelt, Jõrg Werner Münch, Dominic Santi
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Publication number: 20180320970Abstract: A system (2) for extruding and drying an extruded honeycomb body (14) which has channels (18) that extend in a longitudinal direction (L) and which channels (18) are each bounded by first channel walls (20a) that extend in a first direction (A) which is transverse relative to the longitudinal direction (L), and by second channel walls (20b) that extend in a second direction (B) in which is also transverse relative to the longitudinal direction (L) comprises: (i) an extruder (16) having an extrusion head (17) for producing the honeycomb body (14) by extrusion; (ii) a microwave oven (4) comprising an arrangement of a plurality of microwave radiators (6), each microwave radiator being for irradiating the honeycomb body with a directional microwave beam in an irradiation direction (S); and (iii) a feed unit (12) adjoining the extruder (16) for transferring the honeycomb body from the extruder (16) into the microwave oven (4), wherein either: (a) the extrusion head (17) of the extruder is oriented in such a way thType: ApplicationFiled: August 31, 2016Publication date: November 8, 2018Inventors: Ralf DOTZEL, Walter FISCHER, Thomas HIRSCHMANN, Rainer LEPPELT, Joerg MUENCH, Thomas PROSKE, Thomas SCHOENE, Thomas ZAPF
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Publication number: 20180207627Abstract: An extruded, solid honeycomb body comprises a copper-promoted, small pore, crystalline molecular sieve catalyst for converting oxides of nitrogen in the presence of a reducing agent, wherein the crystalline molecular sieve contains a maximum ring size of eight tetrahedral atoms, which extruded, solid honeycomb body comprising: 20-50% by weight matrix component comprising diatomaceous earth, wherein 2-20 weight % of the extruded, solid honeycomb body is diatomaceous earth; 80-50% by weight of the small pore, crystalline molecular sieve ion-exchanged with copper; and 0-10% by weight of inorganic fibres.Type: ApplicationFiled: March 22, 2018Publication date: July 26, 2018Inventors: Juergen Bauer, Ralf Dotzel, Joerg Walter Jodlauk, Rainer Leppelt, Joerg Werner Muench
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Patent number: 9987619Abstract: A filter incorporates a catalyst for the Selective Catalytic Reduction (SCR) of NOx gases and removal of particulate matter from the exhaust gas of a lean burn combustion engine, wherein the catalyst includes a vanadate component having an alkaline earth metal, a transition metal, a rare earth metal, or combinations thereof. The vanadate component may be iron vanadate. The filter includes a supported vanadate component disposed on a wall-flow filter. The method of making the filter includes applying an aqueous mixture of the supported vanadate component as a washcoat on the wall-flow filter or extruding a composition containing the supported vanadate component. The method of treating exhaust gases from an engine includes contacting the exhaust gas with the catalyst including the vanadate component.Type: GrantFiled: May 31, 2013Date of Patent: June 5, 2018Assignee: Johnson Matthey Public Limited CompanyInventors: Kaneshalingam Arulraj, Ralf Dotzel, Rainer Leppelt, Jorg Werner Muench, Alexandra Tsami Goodwin, Gudmund Smedler
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Patent number: 9937488Abstract: An extruded, solid honeycomb body comprises a copper-promoted, small pore, crystalline molecular sieve catalyst for converting oxides of nitrogen in the presence of a reducing agent, wherein the crystalline molecular sieve contains a maximum ring size of eight tetrahedral atoms, which extruded, solid honeycomb body comprising: 20-50% by weight matrix component comprising diatomaceous earth, wherein 2-20 weight % of the extruded, solid honeycomb body is diatomaceous earth; 80-50% by weight of the small pore, crystalline molecular sieve ion-exchanged with copper; and 0-10% by weight of inorganic fibers.Type: GrantFiled: January 23, 2015Date of Patent: April 10, 2018Assignee: Johnson Matthey Catalysts (Germany) GmbHInventors: Juergen Bauer, Ralf Dotzel, Joerg Walter Jodlauk, Rainer Leppelt, Joerg Werner Muench
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Patent number: 9782721Abstract: Systems and methods of continuous operation of a urea-SCR system at low temperatures (200-350° C.) in the presence of high SOx containing flue gas are described. The methods comprise introducing a solution of urea and an NO2 forming compound, preferably an alkaline earth metal nitrate, into an exhaust stream before the exhaust stream contacts an SCR catalyst.Type: GrantFiled: January 29, 2016Date of Patent: October 10, 2017Assignee: Johnson Matthey Public Limited CompanyInventors: Rodney Foo, Rainer Leppelt, Joerg Werner Muench, Ralf Dotzel, Maria Brandmair
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Publication number: 20170209849Abstract: A catalyst with a porous, ceramic support body having a porosity which is formed by pores in at least a part of the ceramic support body, and which furthermore has a catalytically active washcoat coating applied to the ceramic support body, which catalytically active washcoat coating having a layer thickness, comprises a permanent catalytically inactive impregnation comprising at least one catalytically inactive inorganic component, and wherein the permanent inactive impregnation has a layer thickness and is present at least partially between a surface of the porous ceramic support body and the catalytically active washcoat coating is present in the pores of the ceramic support body in a region with reduced porosity underneath the surface of the ceramic support body.Type: ApplicationFiled: December 2, 2016Publication date: July 27, 2017Inventors: Rainer Leppelt, Jõrg Werner Münch, Dominic Santi
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Publication number: 20170007991Abstract: An extruded, solid honeycomb body comprises a copper-promoted, small pore, crystalline molecular sieve catalyst for converting oxides of nitrogen in the presence of a reducing agent, wherein the crystalline molecular sieve contains a maximum ring size of eight tetrahedral atoms, which extruded, solid honeycomb body comprising: 20-50% by weight matrix component comprising diatomaceous earth, wherein 2-20 weight % of the extruded, solid honeycomb body is diatomaceous earth; 80-50% by weight of the small pore, crystalline molecular sieve ion-exchanged with copper; and 0-10% by weight of inorganic fibres.Type: ApplicationFiled: January 23, 2015Publication date: January 12, 2017Inventors: Juergen BAUER, Ralf DOTZEL, Joerg Walter JODLAUK, Rainer LEPPELT, Joerg Werner MUENCH