茂金属催化剂/MAO催化1-癸烯齐聚合及其产物的结构与性能

Synthesis and characterization of oligomer from 1-decene catalyzed by metallocene complex/MAO

用均相茂金属催化剂(n-Bu)Cp2ZrCl2/MAO对1-癸烯的齐聚合进行了研究。探讨了齐聚温度、Al/Zr摩尔比值、助催化剂、反应时间及催化剂浓度对齐聚反应的影响。采用GC-MS、GC和13CNMR对齐聚物的组成和结构进行了表征。GC-MS和GC的分析结果表明所得齐聚物是由二聚体、三聚体、四聚体和五聚体组成。13CNMR分析结果表明1-癸烯齐聚时存在键接异构,主要是头-尾键接的1,2插入,也存在头-头、尾-尾键接的2,1插入。

The synthesis of oligomer from 1-decene with metallocene catalyst （n-Bu）Cp2ZrCl2/MAO was studied. The effects of temperature, Al/Zr ratio, time and concentration of the catalyst on oligomerization behavior were investigated. The oligomer obtained was characterized with GC-MS, GC and ^13C NMR. Those results confirmed that the oligomer was a mixture consisting of di-, tri-, tetra- and pentamer. The ^13C NMR data also implied that chain propagation of the oligomer involved primarily head- to-tail 1, 2-insertions, as well as head-to-head, tail-to-tail, 2, 1-insertions.