Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Mixture is exhaust from internal-combustion engine
Reexamination Certificate
2011-07-19
2011-07-19
Vanoy, Timothy C (Department: 1734)
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Mixture is exhaust from internal-combustion engine
C423S239100, C423S245300, C502S339000, C502S304000, C502S349000, C502S303000, C502S514000, C502S439000, C502S527120, C502S527130, C060S299000
Reexamination Certificate
active
07981390
ABSTRACT:
Catalyst articles comprising substantially only a palladium precious metal component and related methods of preparation and use are disclosed. Disclosed is a catalyst article comprising a first layer formed on a carrier substrate, wherein the first layer comprises a refractory metal oxide and has a surface that is substantially uniform; and a second layer formed on the first layer, wherein the second layer comprises i) an oxygen storage component that is about 50-90% by weight of the second layer and ii) a palladium component in an amount of about 10-150 g/ft3of palladium, wherein the palladium component is substantially the only platinum group metal component. One or more improved properties are exhibited by the catalyst article.
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Galligan Michael P.
Kim Young Gin
Liu Xinsheng
Liu Ye
Tran Pascaline H.
BASF Corporation
Brown Melanie L.
Diehl Servilla LLC
Servilla Scott S.
Vanoy Timothy C
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