Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 1, 2019
Patent Application Number
15327512
Date Filed
August 4, 2015
Patent Citations Received
Patent Primary Examiner
Patent abstract
The present invention relates to a nitrogen oxide storage catalyst composed of at least two catalytically active washcoat layers on a support body, wherein a lower washcoat layer A comprises cerium oxide, an alkaline earth metal compound and/or an alkali metal compound, and platinum and palladium, and an upper washcoat layer B disposed atop the washcoat layer A comprises cerium oxide, platinum and palladium, and no alkali metal or alkaline earth metal compound, and to a method of converting NOx in exhaust gases from motor vehicles which are operated with lean-burn engines.
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