发明授权
US09486793B2 Start-up catalyst for use upstream of a gasoline particulate filter 有权
起动催化剂用于汽油微粒过滤器的上游

Start-up catalyst for use upstream of a gasoline particulate filter
摘要:
The present invention describes a double-layer three-way catalyst on an inert catalyst support comprising a first layer in direct contact with the inert catalyst support, comprising active alumina, a cerium/zirconium mixed oxide and palladium and a second layer applied to the first layer and in direct contact with the exhaust gas to be purified, comprising active alumina and rhodium, characterized in that the second layer is free of cerium and cerium containing materials, the use of such catalyst for cleaning the exhaust gases of a motor vehicle equipped with a gasoline engine and an exhaust gas treatment system comprising such catalyst up stream of a gasoline particulate filter (GPF).
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