Two stage activation of fluorided chromium-containing catalyst

Details Two stage activation of fluorided chromium-containing catalyst Two stage activation of fluorided chromium-containing catalyst

1974-09-26

1978-12-19

Poer, J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252442, 252458, B01J 2102, B01J 2706, B01J 2900

Patent

active

041305051

ABSTRACT:
Catalyst is produced by first activating a chromium-containing silicon-containing support at calcination temperature, treating with a fluoride compound and thereafter heating at a lower temperature of 300.degree. to 1000.degree.F for about 1 to 20 hours. Catalysts thus produced are of particular utility in the production of narrow molecular weight distribution ethylene polymers.

REFERENCES:
patent: 3007905 (1961-11-01), Bailey
patent: 3692697 (1972-09-01), Kravitz et al.

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