Zoned diesel oxidation catalyst

The present invention relates to a zoned diesel oxidation catalyst, wherein the first catalytically active zone and the second catalytically active zone have identical thermal masses, the first catalytically active zone and the second catalytically active zone each contain platinum and palladium as...

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Bibliographische Detailangaben
Hauptverfasser:	SCHIFFER MICHAEL, ADELMANN KATJA, JESKE GERALD, SYMALLA MARTIN, HENGST CHRISTOPH, SCHUETZE FRANK-WALTER
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES THEIR RELEVANT APPARATUS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The present invention relates to a zoned diesel oxidation catalyst, wherein the first catalytically active zone and the second catalytically active zone have identical thermal masses, the first catalytically active zone and the second catalytically active zone each contain platinum and palladium as catalytically active components, the weight ratio of platinum to palladium in the first catalytically active zone and the second catalytically active zone is the same in each case or is greater in the first catalytically active zone than in the second catalytically active zone, and the total concentration of platinum and palladium in the first catalytically active zone is greater than in the second catalytically active zone.