Ziegler catalysts

Details Ziegler catalysts Ziegler catalysts

1977-10-06

1979-04-10

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252430, 526129, 526156, C08F 402, C08F 464

Patent

active

041487559

ABSTRACT:
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.

REFERENCES:
patent: 3054754 (1962-09-01), Lasky
patent: 3072633 (1963-01-01), Cawthon et al.
patent: 3166542 (1965-01-01), Orzechowski et a.
patent: 3400084 (1968-09-01), Fukumoto et al.
patent: 3705886 (1972-12-01), Kashiwa et al.
patent: 3950316 (1976-04-01), Witt
patent: 3978031 (1976-08-01), Reginato et al.

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