DIESEL OXIDATION CATALYST WITH NOx ADSORBER ACTIVITY
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United States of America Patent
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Oct 1, 2015
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Apr 1, 2015
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Apr 1, 2014
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Abstract
An oxidation catalyst for treating an exhaust gas from a diesel engine and an exhaust system comprising the oxidation catalyst are described. The oxidation catalyst comprises: a first washcoat region for adsorbing NOx, wherein the first washcoat region comprises a zeolite catalyst, wherein the zeolite catalyst comprises a noble metal and a zeolite; a second washcoat region for oxidising nitric oxide (NO), wherein the second washcoat region comprises platinum (Pt) and a support material; and a substrate having an inlet end and an outlet end.
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