PREPARATION OF ALPHA-ALUMINA TYPE CATALYST CARRIER

PURPOSE:To obtain the alpha-alumina type catalyst carrier with high strength and excellent abrasion resistance by a method wherein a magnesium compound is added to an alumina powder prepared by dehydrating alumina hydrate and, after granulation, curing, drying and firing are carried out. CONSTITUTIO...

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Hauptverfasser:	NODA FUMIYOSHI, UENO HIDEAKI
Format:	Patent
Sprache:	eng
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:	PURPOSE:To obtain the alpha-alumina type catalyst carrier with high strength and excellent abrasion resistance by a method wherein a magnesium compound is added to an alumina powder prepared by dehydrating alumina hydrate and, after granulation, curing, drying and firing are carried out. CONSTITUTION:To the alumina powder obtained by dehydrating alumina hydrate, a magnesium compound such as MgO, MgCO3 or the like is added and, after mixing, the obtained mixture is granulated. After the granulated substance is calcined, it is cured, dried and fired to obtain the alpha-alumina type catalyst carrier. Because the resulting alpha-alumina type catalyst carrier has high strength and is excellent in abrasion resistance, it is suitable for an exhaust gas purifying catalyst of an automobile or the like.