Gas phase polymerization of ethylene with a silica-supported metallocene catalyst: Influence of temperature on deactivation

被引：45
作者：
Roos, P
Meier, GB
Samson, JJC
Weickert, G
Westerterp, KR
机构：
[1] University of Twente, Faculty of Chemical Engineering, NL-7500 AE, Enschede
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 1997年 / 18卷 / 04期
关键词：
D O I：
10.1002/marc.1997.030180408
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Ethylene was polymerized at 5 bar in a stirred powder bed reactor with silica supported rac-Me2Si[Ind](2)ZrCl2/methylaluminoxane (MAO) at temperatures between 40 degrees C and 80 degrees C using NaCl as support bed and triethylaluminium (TEA) as a scavenger for impurities. For this fixed recipe and a given charge of catalyst, the average catalyst activity is reproducible within 10% for low temperatures. The polymerization rate and the rate of deactivation increase with increasing temperature. The deactivation could be modeled using a first order dependence with respect to the polymerization rate.
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页码：319 / 324
页数：6
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