ZONED DIESEL OXIDATION CATALYST

An oxidation catalyst for treating an exhaust gas from a diesel engine comprises: a substrate; a first washcoat region disposed on the substrate, wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material; a second washcoat region adjacent to the firs...

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Bibliographische Detailangaben
Hauptverfasser:	MARKATOU, Penelope, SHIBATA, Masahito, HANLEY, Robert, NEWMAN, Colin, KLINK, Wassim, LOPEZ-DE JESUS, Yaritza, HASHIMOTO, Yoshihito, COLE, Kieran
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	An oxidation catalyst for treating an exhaust gas from a diesel engine comprises: a substrate; a first washcoat region disposed on the substrate, wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material; a second washcoat region adjacent to the first washcoat region, wherein the second washcoat region comprises a second platinum group metal (PGM) and a second support material; a third washcoat region disposed on the substrate, wherein the third washcoat region comprises a third platinum group metal (PGM) and a third support material, wherein the third washcoat region is adjacent to the second washcoat region and wherein the first washcoat region comprises a part of an upstream washcoat layer, the second washcoat region comprises a part of the upstream washcoat layer and a part of a downstream washcoat layer, and the third washcoat region comprises a part of the downstream washcoat layer.