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METHOD FOR PRODUCING CATALYST COMPOSITION, CATALYST COMPOSITION, DIESEL PARTICULATE FILTER USING SAME, AND EXHAUST GAS PURIFICATION SYSTEM
METHOD FOR PRODUCING CATALYST COMPOSITION, CATALYST COMPOSITION, DIESEL PARTICULATE FILTER USING SAME, AND EXHAUST GAS PURIFICATION SYSTEM
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机译:制备催化剂组合物的方法,催化剂组合物,使用相同的柴油机颗粒过滤器和排气净化系统
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摘要
Provided is a catalyst having the ability to combust PM at relatively low temperatures and having high HC and CO removal (conversion) efficiency even at the above operating temperature. In the catalyst composition, at least one kind of platinum group element selected from Pt, Rh, and Pd is dispersed in and supported by a platinum group-supporting carrier containing at least one kind of element selected from Zr, Al, Y, Si, Bi, Pr, and Tb, and the platinum group-supporting carrier is supported on the surface of a Ce oxide containing Ce as an essential component. The catalyst composition has both PM combustion activity and gas purification activity.
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