EXHAUST GAS PURIFICATION CATALYST AND METHOD FOR PRODUCING SAME

An exhaust gas purification catalyst for purifying an exhaust gas discharged from an internal combustion engine, which comprises: a wall flow type base material wherein an introduction-side cell that opens in the exhaust gas introduction-side end and a discharge-side cell that is adjacent to the int...

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Bibliographische Detailangaben
Hauptverfasser:	MOCHIZUKI, Hiroshi, TAKAYAMA, Akito, FUJIMURA, Takehiro
Format:	Patent
Sprache:	eng ; fre ; ger
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 purification catalyst for purifying an exhaust gas discharged from an internal combustion engine, which comprises: a wall flow type base material wherein an introduction-side cell that opens in the exhaust gas introduction-side end and a discharge-side cell that is adjacent to the introduction-side cell and opens in the exhaust gas discharge-side end are defined by means of a porous partition wall; a first catalyst layer which is formed on at least some of the surfaces of pores within the partition wall, and which contains a catalyst metal; and a second catalyst layer which is formed on at least a part of the first catalyst layer, and which contains a catalyst metal that is different from the catalyst metal that is contained in the first catalyst layer.