sp^3C1桥联CGC的合成以及催化乙烯与1-辛烯共聚应用  

Synthesis of sp^3C1-bridged Constrained Geometry Complexes and Their Application for Copolymerization of Ethylene and 1-Octene

作　　者：米普科[1] 孔晓娟[1] 许胜[1] 朱玉玲[1] 任迎春[1] 

机构地区：[1]华东理工大学材料科学与工程学院,上海200237

出　　处：《分子催化》2012年第6期493-501,共9页Journal of Molecular Catalysis(China)

基　　金：国家自然科学基金资助项目:双中心单组份催化剂合成热塑性弹性体研究(批准号U1162111)

摘　　要：以富烯为原料,与胺基锂进行加成反应后与第四族金属氯化物反应,采用连续化法制备了sp3C1-桥联限制构型茂金属,用1H NMR、13C NMR、EA以及MASS进行了表征,对6,6-二烷基富烯与胺锂的反应机理进行了研究.该系列化合物以甲基铝氧烷(MAO)为助催化剂,0.1 MPa压力下高活性催化乙烯/1-辛烯共聚,活性为1.196×106g Polymer/mol Metal h,聚合物中1-辛烯含量达到5.71%.为合成sp3C桥联限制构型茂金属提供了一种新方法,与经典CGC相比,我们的方法具有原料价格低廉、合成方法相对简单、共聚能力强等优点.The novel sp3C1-bridged constrained geometry complexes（CGC） for ethylene copolymerization with 1-octene were synthesized by fulvene reacting with lithium amine and MCl4 sequentially.All complexes were well characterized by 1H-NMR,13C NMR,MS and EA.The CGC/methylaluminoxane（MAO） catalytic system indicate high activation for copolymerization of ethylene and 1-octene under 1.0 atmospheric pressure.Among them,Complex 2/MAO shows higher activation 1.196 × 106 g-Polymer /mol-Zr·h（Pethylene = 0.1 MPa,Al/Zr = 1 000,time = 30 min） and the 1-Octene content in polymer = 5.46%）.Compared with classical CGC,this article offer a novel method for preparation of sp3C-bridged CGC with many advantages such as lower cost stuff,simple synthesis process and high catalytic activation

关 键 词：C桥联 CGC 共聚催化剂 

分 类 号：O643.32[理学—物理化学]