EXHAUST GAS PURIFICATION CATALYST AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To obtain a catalyst powder excellent in activity and heat resistance.SOLUTION: There is prepared a slurry which contains 10 to 30 mass% of a Ce-containing composite oxide powder having a D50 of 100 to 300 nm as a solid content and 2 to 20 mass% of a dispersant based on the sol...

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Hauptverfasser:	AKAMINE MASAAKI, SHIGETSU MASAHIKO
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 obtain a catalyst powder excellent in activity and heat resistance.SOLUTION: There is prepared a slurry which contains 10 to 30 mass% of a Ce-containing composite oxide powder having a D50 of 100 to 300 nm as a solid content and 2 to 20 mass% of a dispersant based on the solid content. The particle diameter of beads is adjusted at 0.015 to 0.05 mm, the introduction energy amount per solid content unit mass and per hour for pulverization is adjusted at 0.5 to 4.0 kw/dry.kg or less and the Ce-containing composite oxide powder in the slurry is pulverized by a beads mill.