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Billingham, United Kingdom

Johnson Matthey is a British multinational speciality chemicals and sustainable technologies company headquartered in the United Kingdom. It is listed on the London Stock Exchange and has been a constituent of the FTSE 100 Index since 2002. Today, the company has market capitalisation of over £6 billion with 12,000 employees operating in more than 30 countries. Wikipedia.


A catalyst for selective catalytic reduction of NO


Patent
Johnson Matthey | Date: 2015-08-07

An exhaust system for treating an exhaust gas from an internal combustion engine is disclosed. The system comprises a modified lean NO 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 NO 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 NO 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.


Patent
Johnson Matthey | Date: 2015-08-14

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


Patent
Johnson Matthey | Date: 2015-01-12

The present invention provides a method for the purification of a prostaglandin by supercritical fluid chromatography, said method comprising the use of a stationary phase and a mobile phase comprising carbon dioxide, provided that when the stationary phase is unmodified silica gel, the prostaglandin is not luprostiol. The invention also provides prostaglandins obtainable by the method.


Patent
Johnson Matthey | Date: 2015-08-07

A diagnostic system for an exhaust system of an internal combustion engine is disclosed. The diagnostic system comprises a catalyst component and a marker that undergoes a physical transition above a transition temperature of the marker. A method for determining if a catalyst component in an exhaust system for an internal combustion engine has been exposed to a deactivating temperature is also disclosed.

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