EXHAUST CLEANING CATALYST

PROBLEM TO BE SOLVED: To provide an exhaust cleaning catalyst capable of improving NOx conversion performance and reducing the quantity of a noble metal to be used.SOLUTION: The exhaust cleaning catalyst contains a particle containing the noble metal and a particle containing iron having a peak in a...

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Bibliographische Detailangaben
Hauptverfasser:	HANAKI YASUNARI, AKAISHI MISAKI
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:	PROBLEM TO BE SOLVED: To provide an exhaust cleaning catalyst capable of improving NOx conversion performance and reducing the quantity of a noble metal to be used.SOLUTION: The exhaust cleaning catalyst contains a particle containing the noble metal and a particle containing iron having a peak in a position of a temperature lower than the peak of α-FeOin a CO-TPR. The particle containing the iron is the particle containing ceria and/or zirconia carrying iron compound. The particle containing the noble metal is the particle containing rhodium. The ratio of rhodium (Rh) to the iron (Fe) satisfies 0