MgCl_2-BuOH/TiCl_4催化剂催化乙烯聚合动力学  

Kinetic study on ethylene polymerization with MgCl_2-BuOH/TiCl_4 as catalyst

作　　者：王路海[1,2] 张瑞[1,2] 任合刚[1] 刘宾元[1] 闫卫东[1] 

机构地区：[1]河北工业大学化工学院高分子科学与工程研究所,天津300130 [2]中国石油石化研究院大庆化工研究中心,黑龙江大庆163714

出　　处：《合成树脂及塑料》2009年第4期6-9,共4页China Synthetic Resin and Plastics

基　　金：中国石油天然气股份有限公司资助(0604A18-11)

摘　　要：研究了MgCl_2-正丁醇/TiCl_4催化剂常压下催化乙烯聚合的性能和动力学行为。考察了n(Al)/n(Ti)、聚合温度、共聚单体浓度、氢气分压对催化剂性能的影响。研究表明:三乙基铝为助催化剂,n(Al)/n(Ti)为200,聚合压力为0.1MPa,温度为50℃,聚合时间为2h时,该催化剂具有较高的活性;聚合动力学行为平稳,活性衰减较慢,活性可达1550.2g/g;该催化剂具有良好的乙烯均聚合和共聚合性能以及氢调性能。The kinetics behavior of ethylene polymerization with MgCl2-n-butanol （BuOH）/TiCl4 as catalyst under normal pressure and the performance of the catalyst were studied. The effects of molar ratio of Al to Ti, polymerization temperature, comonomer concentration, hydrogen pressure on the performance of the catalyst were investigated. The results indicate that the catalyst has high activity in the condition as follows： aluminum ethyl（AlEt3） as cocatalyst, molar ratio of Al to Ti 200, total pressure 0.1 MPa, polymerization temperature 50℃ and time 2 h. The kinetic curves of polymerization assume a smooth pattern with slow activity attenuation, and the activity of the catalyst can reach 1 550.2 g/g as its maximum. The catalyst exhibits excellent hydrogen modulation and performance in ethylene homopolymerization and copolymerization.

关 键 词：乙烯 聚合 氯化镁载体催化剂 动力学 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]