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Magnesium chloride supported bis(cyclopentadienyl)titanium(IV) dichloride-MAO catalyst for ethylene polymerization

✍ Scribed by Soumen Sen Sarma; Swaminathan Sivaram

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
395 KB
Volume
198
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

A novel magnesium chloride supported titanocene catalyst was synthesized using a soluble tetrahydrofuran complex of magnesium chloride. The suported catalyst polymerized ethylene with high activities in presence of methylaluminoxane. The significant feature of the supported metallocene catalyst is that it shows high polymerization activity at low Al/Ti ratio and at higher temperatures compared to soluble catalyst. The role of support in stabilizing the active species on the metallocene is discussed.

πŸ“œ SIMILAR VOLUMES

Bis(cyclopentadienyl)zirconium dichlorid
Bis(cyclopentadienyl)zirconium dichloride supported on zeolites for ethylene polymerization
✍ Maria De FΓ‘tima V. Marques; Cristiane A. Henriques; JosΓ© Luiz F. Monteiro; Sonia πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 477 KB

Y zeolites with different sodium contents and a sodium mordenite were evaluated as support for bis(cyclopentadieny1)zirconium dichloride as catalyst for ethylene polymerization. The results showed that, although the activities of the supported catalysts were lower than that of the homogeneous system

Supported titanium catalysts based on ma
Supported titanium catalysts based on magnesium dichlorideβ€”silicon tetraethoxide adduct for propylene polymerization
✍ V. K. Gupta; R. C. Jain; M. Ravindranathan πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 124 KB

Anhydrous magnesium dichloride was reacted with silicon tetraethoxide to form a solid adduct. The adduct was treated with titanium tetrachloride and an internal Lewis base to prepare supported titanium catalysts. Alkyl benzoate (PhCOOR, R Γ… Me, Et, n 0 Bu) or dialkyl phthalate [Ph(COOR) 2 , R Γ… Me,