Johnson Matthey Public Limited Company

Gm Global Technolgoy Operations, Inc.

Cummins Inc.

Johnson Matthey Inc.

Paul James Millington

Raj Rao Rajaram

Mark Robert Feaviour

Michael Ian Petch

Suzanne Rose Ellis

Jillian Elaine Bailie

David Wails

Daniel Swallow

Paul Richard Phillips

Jillian Elaine Collier

John Benjamin Goodwin

Stuart David Reid

Michael Anthony Howard

Jessica Grace Reinkingh

Lucy Clowes

Andrew Armitage

Chris Robson

Fezile Lakadamyali

Sarah Frances Lockett

Jonathan Charles Frost

Oliver Destecroix

Aleksey Yezerets

Neal W Currier

David Thompsett

Andrew Peter Walker

Ralf Dotzel

Philip Gerald Blakeman

Sriram S Popuri

Rainer Leppelt

Robert James Brisley

Sougato Chatterjee

Jörg Werner Münch

David S Lafyatis

Hubert Schedel

Isabel Zoe Tingay

Desiree Duran-Martin

Glen Spreitzer

John Frederick Pignon

Elizabeth Hazel Mountstevens

William Shelbourne Epling

Maria C Vlachou

Desiree Duran Martin

Sylvie Cécile Laroze

Rebecca Maksymowicz

Fiona-Mairead McKenna

Kenneth David Camm

Noelia Cortes Felix

Kirsty Ellen Cockle

Edward James Richard Moss

Edward James Moss

Isabel Zoe Jones

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.

TWC catalysts for gasoline engine exhaust gas treatments

A NOadsorber catalyst and its use in an emission treatment system for internal combustion engines, is disclosed. The NOadsorber catalyst comprises a first layer consisting essentially of a support material, one or more platinum group metals disposed on the support material, and a NOstorage material.

NOx adsorber catalyst

A NOadsorber catalyst and its use in an emission treatment system for internal combustion engines, is disclosed. The NOadsorber catalyst composition comprises a support material, one or more platinum group metals disposed on the support material, and a NOstorage material.

NOadsorber catalyst

A catalytic wall-flow monolith filter having three-way catalytic activity for use in an emission treatment system of a positive ignition internal combustion engine comprising a porous filter substrate having a first face and a second face defining a longitudinal direction there between and first and second pluralities of channels extending in the longitudinal direction, wherein the first plurality of channels is open at the first face and closed at the second face and the channels of the first plurality of channels are defined in part by channel wall surfaces, wherein the second plurality of channels is open at the second face and closed at the first face and the channels of the second plurality of channels are defined in part by channel wall surfaces and wherein channel walls between the channel wall surfaces of the first plurality of channels and the channel wall surfaces of the second plurality of channels are porous, wherein a first on-wall coating comprising catalytic material having a layer thickness is present on at least the channel wall surfaces of the first plurality of channels, wherein the catalytic material on channel wall surfaces of the first plurality of channels comprises one or more platinum group metal selected from the group consisting of (i) rhodium (Rh) only; (ii) palladium (Pd) only; (iii) platinum (Pt) and rhodium (Rh); (iv) palladium (Pd) and rhodium (Rh); and (v) platinum (Pt), palladium (Pd) and rhodium (Rh) and a refractory metal oxide support, wherein: (i) an amount by weight of the one or more platinum group metal, per unit volume of the on-wall coating present on channel wall surfaces of the first plurality of channels varies continually along the longitudinal direction; and/or (ii) the layer thickness of the on-wall coating present on channel wall surfaces of the first plurality of channels varies continually along the longitudinal direction.

Gasoline particulate filter

A catalytic wall-flow monolith for use in an emission treatment system comprises a porous substrate and a three-way catalyst (TWC), wherein the TWC is distributed substantially throughout the porous substrate and wherein the TWC comprises:

A wall-flow filter for filtering particulate matter from a flowing exhaust gas comprises a catalyst for catalyzing both the conversion of solid carbon in the particulate matter by oxygen and the selective reduction of oxides of nitrogen in the exhaust gas with a nitrogenous reductant, which catalyst comprising optionally stabilized ceria and at least one metal selected from (i) tungsten and (ii) both tungsten and iron.

[object Object]

A NOabsorber catalyst comprising a substrate monolith coated with one or more washcoat layers and comprising a first component comprising a nitrogen oxide storage component, at least one precious metal and a dispersed rare earth oxide supported on a refractory support material, and a second component comprising a precious metal supported on a bulk reducible oxide that is substantially free of nitrogen oxide storage material, wherein the precious metal present in the second component comprises Pt, Pd or a combination of both Pt and Pd and wherein the bulk reducible oxide is an oxide, a composite oxide or a mixed oxide comprising at least one of manganese, iron, cobalt, copper, tin or cerium.

An exhaust system for treating exhaust gas from an internal combustion engine is disclosed. The system comprises a three-way catalyst (TWC), a fuel reformer catalyst located downstream of the TWC, and a fuel supply means located upstream of the fuel reformer catalyst. The exhaust gas is split into two portions. The first portion of the exhaust gas bypasses the TWC and contacts the fuel reformer catalyst in the presence of fuel added from the fuel supply means, and is then recycled back to the engine intake. The second portion of the exhaust gas is contacted with the TWC and is then utilized to heat the fuel reformer catalyst before being expelled to atmosphere. The exhaust system allows for maximum heat exchange from the exhaust gas.

Exhaust system with a reformer catalyst

A method of reducing nitrogen oxides (NO) in a flowing combustion exhaust gas to N, which method comprising oxidizing nitrogen monoxide to nitrogen dioxide on a transition metal/elite catalyst at catalyst bed temperatures below 50&#xb0; C. and reducing NOwith the catalyst using an hydrocarbon (HC) reductant at catalyst bed temperatures below 150&#xb0; C.

Low temperature hydrocarbon SCR

Methods and apparatus for producing hydrogen with reforming catalysts. The reforming catalysts may be platinum group metals on a support material, and they may be located in a reforming reaction zone of a primary reactor. The support material may be an oxidic support having a ceria and zirconia promoter, or may include a neodymium stabilizer. The support material may also include at least one Group IA, Group IIA, manganese, or iron metal promoter. The primary reactor may have a first and second reforming reaction zones, where upstream catalysts located in the first reforming reaction zone and downstream catalysts located in the second reforming reaction zone may be selected to perform optimally under the conditions in their respective reforming reaction zone.

Methods, apparatus, and systems for producing hydrogen from a fuel

An OBD system that diagnoses on board the condition of NOx adsorber catalysts in diesel engines and that relies on existing mass-produced exhaust gas oxygen sensor, also known as lambda sensor, technology, and the following established phenomena. In a reducing environment, typical exhaust gas oxygen (lambda) sensors have different sensitivities to various reductants, with sensitivity decreasing in this order: H&#x3e;CO&#x3e;short-chain hydrocarbons&#x3e;long-chain hydrocarbons. In the process of regeneration of the NOx adsorber catalyst, the original reductant may evolve into a different reductant species, e.g., via reactions such as a water-gas shift (WGS), a reforming, a partial oxidation, etc. This leads to a difference in exhaust gas oxygen sensor readings between the inlet to the catalyst and outlet from the catalyst. It has been observed in diesel engine testing that the ability of the NOx adsorber catalyst to perform such a reductant evolution is correlative to the catalyst's NOx reduction capability.

Method for on-board diagnostics of diesel engine NOx adsorber catalysts

Methods and apparatus for producing hydrogen are provided. The methods and apparatus utilize reforming catalysts in order to produce hydrogen gas. The reforming catalysts may be platinum group metals on a support material, and they may be located in a reforming reaction zone of a primary reactor. The support material may an oxidic support having a ceria zirconia promoter. The support material may be an oxidic support and a neodymium stabilizer. The support material may also be an oxidic support material and at least one Group IA, Group IIA, manganese, or iron metal promoter. The primary reactor may have a first and second reforming reaction zones. Upstream reforming catalysts located in the first reforming reaction zone may be selected to perform optimally under the conditions in the first reforming reaction zone. Downstream reforming catalysts located in the second reforming reaction zone may be selected to perform optimally under the conditions in the second reforming reaction zone.

Methods for producing hydrogen from a fuel

Growing community of inventors

Reading, United Kingdom

Paul James Millington