CARRIER FOR CATALYST FOR PURIFYING EXHAUST GAS FROM INTERNAL-COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To provide a carrier for a catalyst for purifying exhaust gas from an internal-combustion engine, the carrier being excellent in OSC (oxygen storage capacity) in a wide temperature range from a low temperature, at an early stage after startup of operation, to a high temperature...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAHARA YUNOSUKE, HOSHIJIN NAKANORI, NARA AKIHIRO, IMADA YASUKI, NAGAO YUKI, AOKI SHINJI, WAKABAYASHI HOMARE, SAKAGAMI TAKAHIKO
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 a carrier for a catalyst for purifying exhaust gas from an internal-combustion engine, the carrier being excellent in OSC (oxygen storage capacity) in a wide temperature range from a low temperature, at an early stage after startup of operation, to a high temperature.SOLUTION: The carrier for a catalyst for purifying exhaust gas from an internal-combustion engine comprises a core material on whose surface CeOis carried, the core material comprising a CeO-ZrOsolid solution or a CeO-ZrO-LaOsolid solution. In this case, the quantity of the CeOin the core material is 5-35 mass% to the mass of the carrier, and the quantity of the LaOin the core material is 0-10 mass% to the mass of the carrier, and the quantity of the CeOcarried on the surface of the core material is 5-17 mass% to the mass of the carrier.