| abstract |
An oxidation catalyst for treating exhaust gas from a diesel engine and an exhaust system including this oxidation catalyst are described. A first washcoat region for adsorbing NOx, the oxidation catalyst comprising a zeolite catalyst comprising a noble metal and a zeolite; A second washcoat region for oxidizing nitrogen oxides (NO), comprising platinum (Pt) and a support material; And a substrate having an inlet end and an outlet end. |