Johnson Matthey Public Limited Company

Johnson Matthey Inc.

Isabel Zoe Tingay

Gudmund Smedler

Olivier Sonntag

Kieran John Cole

Andrew Newman

Colin Russell Newman

Tim Genschow

Ruth Savage

Paul Richard Phillips

Guy Richard Chandler

Raj Rao Rajaram

Andrew Peter Walker

Philip Gerald Blakeman

Jillian Elaine Collier

Rainer Leppelt

Paul James Millington

Agnes Suganya Raj

Robert Hanley

Lee Alexander Gilbert

Kaneshalingam Arulraj

Oliver Hemming

Calum Robertson

Zuharia Arshad

Nicholas Spencer

Rob Walker

Oliver Rowe

Christopher Smith

Kieran Cole

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 FeMVOwhere x=0.2 to 1 and y=1&#x2212;x, and where M comprises one or more non-Fe metals when y&#x3e;0.

Vanadium SCR catalysts

An oxidation catalyst is described for treating an exhaust gas produced by a diesel engine, wherein the oxidation catalyst comprises: a substrate; a capture material for capturing at least one phosphorus containing impurity and/or at least one sulfur containing impurity in the exhaust gas produced by the diesel engine; and a catalytic region disposed on the substrate; wherein the catalytic region comprises a catalytic material comprising a platinum group metal (PGM) selected from the group consisting of platinum (Pt), palladium (Pd) and a combination of platinum (Pt) and palladium (Pd).

Diesel oxidation catalyst having a capture region for exhaust gas impurities

A catalytic aftertreatment system for a diesel engine exhaust gas is described. The system comprises a diesel oxidation catalyst (DOC) and an aftertreatment device located downstream of the diesel oxidation catalyst (DOC), which aftertreatment device requires periodic heat treatment, and means to generate a temperature increase within the aftertreatment device, said diesel oxidation catalyst (DOC) comprising an upstream zone of length from 0.5 to 2 inches (12.7-50.81 mm) of higher oxidation activity for hydrocarbons (HC) than the remainder of the diesel oxidation catalyst (DOC).

Automotive catalytic aftertreatment system

Provided is a system for treating an exhaust gas comprising a first SCR catalyst zone comprising an iron loaded medium- or large-pore molecular sieve having a first ammonia storage capacity; and a second SCR catalyst zone comprising a copper loaded small-pore molecular sieve having a second ammonia storage capacity, wherein the first SCR catalyst zone is disposed upstream of the second SCR catalyst zone with respect to normal exhaust gas flow through the system and wherein the second ammonia storage capacity is greater than the first ammonia storage capacity. Also provided is a method for using the system to treat exhaust gas.

Zoned catalyst for treating exhaust gas

Provided is a system for treating an exhaust gas comprising a first SCR catalyst zone comprising vanadium loaded on a metal oxide selected from TiO, ZrO, SiO, CeO, and AlO; and a second SCR catalyst zone comprising a copper loaded small-pore molecular sieve, wherein the first SCR catalyst zone is disposed upstream of the second SCR catalyst zone with respect to normal exhaust gas flow through the system. Also provided is a method for using the system to treat exhaust gas.

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

Growing community of inventors

Royston, United Kingdom

Isabel Zoe Tingay