CATALYTIC EXHAUST GAS PURIFICATION APPARATUS

The present invention provides a catalyst for exhaust gas purification, which is capable of effectively purifying an exhaust gas. The present invention relates to a catalyst (10) for exhaust gas purification, which comprises first catalyst particles (1), second catalyst particles (2) and carrier par...

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Bibliographische Detailangaben
Hauptverfasser:	INODA, Satoru, MATSUEDA, Satoshi, HIRAI, Akimasa, TAKI, Kenichi
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:	The present invention provides a catalyst for exhaust gas purification, which is capable of effectively purifying an exhaust gas. The present invention relates to a catalyst (10) for exhaust gas purification, which comprises first catalyst particles (1), second catalyst particles (2) and carrier particles (4) that support the first catalyst particles (1) and the second catalyst particles (2). The first catalyst particles (1) are Pd particles or Pd-Rh alloy particles; and the second catalyst particles (2) are Pd-Rh alloy particles. The molar ratio of Rh to the total of Pd and Rh in the first catalyst particles (1) is 0.50 times or less the molar ratio of Rh to the total of Pd and Rh in the second catalyst particles (2).