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CRT Trap

17 December 1999

Following the announcement that ARCO Products Company will begin offering a new ultra low sulfur diesel fuel of maximum 15 ppm sulfur content to operators of urban municipal fleets in California, Johnson Matthey, Catalytic Systems Division, North America (Wayne, PA) has indicated that its Continuously Regenerating Technology (CRT®) products are commercially viable for use as an aftertreatment process with ARCO's new fuel.

Johnson Matthey's CRT® diesel particulate filter uses a proprietary platinum-based catalyst to oxidize the NO to NO2 and uses the produced NO2 as a powerful oxidant for removal of soot trapped in the filter material following the catalyst. Johnson Matthey's CRT® system requires ultra low sulfur fuel for proper operation. This product has been now made commercially available in the United States. It has been used for a number of years in Sweden, UK, and other EU countries, where low sulfur diesel fuel has been available on the market. According to Johnson Matthey, there are over 6,500 CRT® units in use on diesel-powered vehicles throughout Europe. Some of these systems have exceeded 375,000 miles of in-field use.

Johnson Matthey's Catalytic Systems Division has eight catalyst manufacturing sites around the world, in the United States, the United Kingdom, Belgium, Mexico, Argentina, South Africa, Malaysia, and India. The company also has worldwide R&D and testing facilities located in Pennsylvania and Michigan in the United States, in Royston and Sonning Commons in the United Kingdom, and in Sweden, Japan, Brazil, and Argentina.

Source: Johnson Matthey