ZIEGLER CATALYSTS

Ziegler catalytic system comprising an organo-metallic compound of a metal of Groups I to III of the Periodic System and a compound of a heavy metal of Groups IV to VI supported on an alumina carrier, the latter being an activated amorphous alumina containing from 0.3 to 30% by weight of salts of al...

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Bibliographische Detailangaben
Hauptverfasser:	FONTANESI, MAURIZIO, INVERNIZZI, RENZO, LIGORATI, FERDINANDO, COLLU, CARLO
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	Ziegler catalytic system comprising an organo-metallic compound of a metal of Groups I to III of the Periodic System and a compound of a heavy metal of Groups IV to VI supported on an alumina carrier, the latter being an activated amorphous alumina containing from 0.3 to 30% by weight of salts of aluminum with oxygenated inorganic anions, or of a mixture of the latter with salts of aluminum with non-oxygenated inorganic anions, said carrier being prepared by precipitating an alumina gel at a pH value of 7 - 10, introducing the inorganic anions into said gel, drying said gel and calcining the resulting amorphous alumina at 250.degree. - 700.degree.C.