Exhaust gas purifying catalyst and method for producing same

An exhaust gas purifying catalyst comprises: a plurality of catalyst units which contain anchor particles that support noble metal particles; and an enclosure material that internally contains the plurality of catalyst units and separates the catalyst units from each other. Both the anchor particles...

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Bibliographische Detailangaben
Hauptverfasser:	SHIBAYAMA HARUHIKO, SHIRATORI KAZUYUKI, HIRAMOTO YOSHIAKI
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:	An exhaust gas purifying catalyst comprises: a plurality of catalyst units which contain anchor particles that support noble metal particles; and an enclosure material that internally contains the plurality of catalyst units and separates the catalyst units from each other. Both the anchor particles and the enclosure material contain an alkali element and/or an alkaline earth element. Due to this configuration, this exhaust gas purifying catalyst is capable of maintaining the exhaust gas purification performance by suppressing agglomeration of the noble metal particles even in cases where the ambient temperature is high.