锆配合物催化1-丁烯二聚反应研究

Dimerization of 1-butene catalyzed by zirconium complexes

用 Zr Cl4、Zr( CCl3CO2 ) 4、Zr( OEt) 2 Cl2 分别与 Et2 Al Cl组成 Ziegler-Natta型催化剂催化1 -丁烯二聚 .考察了不同反应条件对 1 -丁烯二聚的影响 .在相同的反应条件下 ,这三种催化剂对 1 -丁烯二聚的转化率顺序为 Zr( CCl3CO2 ) 4>Zr Cl4>Zr( OEt) 2 Cl2 .在最佳条件下 ,Zr( CCl3CO2 ) 4-Et2 Al Cl-Ph3P催化 1 -丁烯二聚的转化率为 95.1 % ,二聚物的选择性为 85.4 % .产物中有 C6 烯烃生成 ,证明锆配合物催化 1

Dimerization of 1-butene was catalyzed by the complexes ZrCl4, Zr(CCl3CO2)4, Zr(OEt)2Cl2 with Et2AlCl. The effects of different reaction conditions on the 1-butene dimerization have been studied, and the structures of main products were also tested. In the same reaction condition, the order of the 1-butene conversion of the catalysis is Zr(CCl3CO2)4>ZrCl4>Zr(OEt)2Cl2. Under the optimal reaction conditions, the conversion of the catalyst Zr (CCl3Co2)4-Et2AlCl- Ph3P is 95.1% with selectivity of 85.4% for dimerization. C6 olefins have been found in the dimerization products, so the metal carbon mechanism for 1-butene oligomerization by zirconium complexes is proposed.