Kinetic and mechanistic aspects of metallocene polymerisation catalysts |
| |
Authors: | Manfred Bochmann |
| |
Affiliation: | Wolfson Materials and Catalysis Centre, School of Chemical Sciences and Pharmacy, University of East Anglia, University Plain, Norwich NR4 7TJ, UK |
| |
Abstract: | The nature of the counteranion is an essential component of metallocene polymerisation catalysts. Detailed mechanistic investigations show how the anion is able to determine the activity and, in many cases, also the stereoselectivity of the catalyst. This review summarises recent advances in mechanistic understanding of well defined metallocene catalysts based on ion pairs [L2ZrR+ ?X−] and describes recent insights in ion mobility and kinetics of alkene polymerisation processes. The interplay of ligand structure and nature of the counteranions demonstrates a fascinating versatility and subtlety that continually challenge our ability to rationalise and predict catalyst performance. |
| |
Keywords: | Catalysis Metallocenes Polymerisation Anion effects Kinetics Stereoselectivity |
本文献已被 ScienceDirect 等数据库收录! |
|