SCR-CATALYZED SOOT FILTER WITH INTEGRATED LEAN NOX TRAP CATALYST FOR USE IN PASSIVE SELECTIVE CATALYTIC REDUCTION

Disclosed herein is a catalyzed soot filter (CSF) containing a porous wall flow substrate, a lean NOx trap (LNT) catalyst, and a catalyst for selective catalytic reduction (SCR). Also disclosed is a method of preparing the catalyzed soot filter, an emissions treatment system containing the catalyzed...

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Bibliographische Detailangaben
Hauptverfasser:	GRUBERT, Gerd, NEUBAUER, Torsten, PUNKE, Alfred
Format:	Patent
Sprache:	eng ; fre ; ger
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:	Disclosed herein is a catalyzed soot filter (CSF) containing a porous wall flow substrate, a lean NOx trap (LNT) catalyst, and a catalyst for selective catalytic reduction (SCR). Also disclosed is a method of preparing the catalyzed soot filter, an emissions treatment system containing the catalyzed soot filter, and processes for treating exhaust gas emissions employing the catalyzed soot filter.