R. Spitz, V. Pasquet, M. Patin
1995
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7
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Abstract
Vanadium tetrachloride supported on magnesium chloride catalysts are studied in ethylene polymerization. These catalysts appear to have rather high activities, a great sensitivity to deactivation by hydrogen and a complex behavior which is very sensitive to the conditions of the first contact between the catalyst components. They are activated by different families of promoters, acting either by complexation or possibly by oxidoreduction.