EXHAUST GAS PURIFICATION CATALYST AND PRODUCTION METHOD THEREOF

An exhaust gas purification catalyst contains an oxide 1 and an oxide 2. The catalyst has pores P 1-260 with a pore size of from 1 nm to 260 nm, that can be measured by the nitrogen absorption method, and the total sum PV 1-260 of the pore volume PV 1-260 of the pores is equal to or greater than 0...

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Hauptverfasser:	FUJIMOTO, Misaki, HANAKI, Yasunari
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	An exhaust gas purification catalyst contains an oxide 1 and an oxide 2. The catalyst has pores P 1-260 with a pore size of from 1 nm to 260 nm, that can be measured by the nitrogen absorption method, and the total sum PV 1-260 of the pore volume PV 1-260 of the pores is equal to or greater than 0.79 cm 3 /g. The oxide 1 is an oxide with an oxygen release capability. The oxide 2 is represented by La x M 1-x M'O 3-´ (2), where M is at least one element selected from the group consisting of Ba, Sr and Ca, M' is at least one element selected from the group consisting of Fe, Co, Ni and Mn, ´ is the amount of oxygen deficiency, x satisfies 0 ¦ x ¦ 1, and ´ satisfies 0 ¦ ´ ¦ 1.