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Study of metallocene supported on porous and nonporous silica for the polymerization of ethylene

✍ Scribed by R. Quijada; R. Rojas; L. Alzamora; J. Retuert; F.M. Rabagliati


Book ID
110383711
Publisher
Springer US
Year
1997
Tongue
English
Weight
269 KB
Volume
46
Category
Article
ISSN
1011-372X

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πŸ“œ SIMILAR VOLUMES


Synthesis of Silica-Supported Metallocen
✍ FrΓ©dΓ©ric Bortolussi; Jean-Pierre Broyer; Roger Spitz; Christophe Boisson πŸ“‚ Article πŸ“… 2002 πŸ› John Wiley and Sons 🌐 English βš– 124 KB

## Abstract Four supported metallocene catalysts were synthesized directly on silica [Si(CpZrCp), Si(CpZrInd), Si(IndZrCp), and Si(IndZrInd)]. The first ligand was chemically tethered to silica (internal ligand) while the second was free from silica (external ligand). The polymerization of ethylene

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✍ Peter Roos; Gerben B. Meier; Job Jan C. Samson; GΓΌnter Weickert; K. Roel Westert πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 279 KB

## Abstract Ethylene was polymerized at 5 bar in a stirred powder bed reactor with silica supported __rac__‐Me~2~Si[Ind]~2~ZrCl~2~/methylaluminoxane (MAO) at temperatures between 40Β°C and 80Β°C using NaCl as support bed and triethylaluminium (TEA) as a scavenger for impurities. For this fixed recipe

Metallocene catalyst supported on chemic
✍ MΓ΄nica C Haag; Jairton Dupont; Fernanda C Stedile; JoΓ£o H.Z dos Santos πŸ“‚ Article πŸ“… 2003 πŸ› Elsevier Science 🌐 English βš– 296 KB

In the present work Et(IndH 4 ) 2 ZrCl 2 was immobilized on silica previously modified with different chemical compounds, namely VOCl 3 , SnCl 4 , Bu 3 SnH, Me 2 SiHCl, polymethylhydrosiloxane (PMHS) and such systems were compared to methylaluminoxane (MAO) pretreated systems. Bu 3 SnH-modified sili