Johnson Matthey has developed a new technology that reduces emissions from older buses, enabling people to breathe fresh and cleaner air.
Johnson Matthey's catalysts were installed in one-third of new vehicles worldwide, preventing 40 tonnes of potentially harmful emissions from entering the atmosphere every minute of the day.
Emission control systems, developed by Johnson Matthey and its partners, have already been installed in more than 1,000 London buses to enable them to meet increasingly stringent emissions targets. The process started with the retrofitting of 54 older buses for the London Olympics that were used to ferry passengers between sites.
These catalyst and filter systems are installed in the exhaust system of a vehicle, as close to its engine as possible in order to take advantage of the heat generated. They clean the exhaust the vehicle sends out into the atmosphere. A precious metal catalyst (usually containing platinum and palladium), converts harmful carbon monoxide and hydrocarbons into carbon dioxide and water.
Read more: Johnson Matthey develops technology that reduces emissions
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