The kinetics of polymerization of cyclopentene by WCl6/AliBu3 catalyst |
| |
Authors: | AJ Amass CN Tuck |
| |
Institution: | Department of Chemistry, University of Aston in Birmingham, Gosta Green, Birmingham B4 7ET, England |
| |
Abstract: | The kinetics of the polymerization of cyclopentene by WCl6/AliBu3 catalysts have been studied and the factors controlling the reproducibility of the rate of polymerization have been ascertained. A significant dependence of the rate of polymerization on the time between the additions of WCl6 and AliBu3 was observed. The dependence of the catalyst activity r,i this time delay suggested that WCl6 reacted with cyclopentene to produce an unstable species (W1) that could react with AliBu3 to produce a catalytically active species (W11) or that could react further with cyclopentene to produce another species W2 that in turn would react with AliBu3 to produce a much less active catalyst W21. The detailed study of the kinetics of polymerization under controlled conditions suggested a kinetic chain mechanism initiated by two catalyst species; mechanism of polymerization based on the carbene system is suggested. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|