Novel Route to Immobilize Metallocenes within Silica-Based Supports: Investigation of a Nonhydrolytic Sol–Gel Process
✍ Scribed by Cédric Dever; Alain Deffieux; Henri Cramail; Sergio Mastroianni
- Book ID
- 102492407
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 99 KB
- Volume
- 24
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
A novel approach to metallocene catalyst heterogenization is presented. Supported metallocenes are obtained by metallation of indenyl‐modified silica produced by a nonhydrolytic sol–gel process. The catalytic activities for ethylene polymerization are rather high for supported systems and may reach 190 grams of polyethylene per gram of catalyst per hour per bar. The influence of the preparation and composition of these supported metallocene systems on ethylene polymerization and polyethylene characteristics are reported.
Possible structure of the indenyl‐modified silicas.
magnified imagePossible structure of the indenyl‐modified silicas.