Exhaust gas purifying catalyst and method for purifying exhaust gas

The present invention provides an exhaust gas purifying catalyst which can maintain high catalyst activity even after the exhaust gas purifying catalyst is exposed to an exhaust gas at a high temperature for a long period of time. The exhaust gas purifying catalyst contains a Pd-Pr complex and PdO,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Goto, Hideki, Ikeda, Masanori, Minami, Shigekazu, Nakashima, Masashi, Ashikari, Kenji
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 provides an exhaust gas purifying catalyst which can maintain high catalyst activity even after the exhaust gas purifying catalyst is exposed to an exhaust gas at a high temperature for a long period of time. The exhaust gas purifying catalyst contains a Pd-Pr complex and PdO, and the Pd-Pr complex is represented by PraPdbOc, where a=1 to 3, b=1 to 10, and c=1 to 6.