Catalyst formulation, exhaust system, and gas treatment device

In one embodiment, a catalyst formulation includes a poison adsorbing material and a catalyst material. The poison adsorbing material comprises large particles having an average major diameter of greater than or equal to about 2.0 micrometers. The catalyst material comprises a precious metal support...

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Bibliographische Detailangaben
1. Verfasser:	LABARGE WILLIAM J
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 MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PUNCHING METAL SEPARATION STEAM ENGINES THEIR RELEVANT APPARATUS TRANSPORTING WEAPONS WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	In one embodiment, a catalyst formulation includes a poison adsorbing material and a catalyst material. The poison adsorbing material comprises large particles having an average major diameter of greater than or equal to about 2.0 micrometers. The catalyst material comprises a precious metal support comprising small particles having an average major diameter of less than or equal to about 1.0 micrometers, and a catalyst material comprising at least one of ruthenium and iridium.