发明公开
EP2045010A1 EXHAUST GAS PURIFYING CATALYST 有权
排气净化催化剂

EXHAUST GAS PURIFYING CATALYST
摘要:
The present invention provides an exhaust gas purification catalyst comprising a base material, and a two or more layered catalyst coating layer, formed on the base material, wherein the two or more layers have upper and lower layers, and wherein the upper layer contains a large amount of noble metal per liter of the base material more than that of the lower layer, and the lower layer contains a large amount of an oxygen storage/release material per liter of the base material more than that of the upper layer. This exhaust gas purification catalyst has more excellent H 2 S purifying performance than conventional catalysts while maintaining purifying performance against NOx and the other exhaust gas components.
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