Filter substrate comprising three-way catalyst
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United States of America Patent
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Oct 17, 2017
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N/A
app pub date -
May 5, 2016
filing date -
Apr 24, 2012
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Abstract
A catalysed filter for a positive ignition internal combustion engine comprises a porous filtering substrate having a total substrate length coated with a three-way catalyst washcoat composition comprising at least one precious metal selected from the group consisting of rhodium and one or both of platinum and palladium supported on a high surface area oxide, and an oxygen storage component, which composition being axially shared by a first zone comprising inlet surfaces of a first substrate length
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