Exhaust gas purification catalyst

Details Exhaust gas purification catalyst Exhaust gas purification catalyst

B - Operations, Transporting

01

J

252/45, 252/53.C

B01J 23/40 (2006.01) B01D 53/94 (2006.01) B01J 23/24 (2006.01) B01J 23/652 (2006.01) B01J 37/02 (2006.01)

Patent

CA 1183118

ABSTRACT This invention relates to a three-way catalyst for use in the purification of exhaust gas from an internal combustion engine, a method of making the same and an exhaust system including a three-way catalyst for an internal combustion engine. Specifically, the three-way catalyst comprises a substrate suitable for the purification of exhaust gas from an internal combustion engine wherein the catalyst comprises a substrate, a refractory oxide layer, tungsten and/or one or more tungsten containing compounds and one or more platinum group metals. The catalyst produces food suppression of ammonia production in oxygen lean exhausts.

394510

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