Ind_2ZrCl_n(OC_6H_3-3,5-Me_2)_(2-n)/一氯二乙基铝催化乙烯齐聚的研究

Ethylene Oligomerization Catalyzed by Ind_2ZrCl_n(OC_6H_3-3,5-Me_2)_(2-n)/Et_2AlCl

合成了 Ind2 Zr(OC6 H3- 3,5 - Me2 ) 2 (A)、 Ind2 Zr Cl(OC6 H3- 3,5 - Me2 ) (B)和 Ind2 Zr Cl2 (C) 3个化合物 ,并在不同反应温度、陈化温度、反应时间等条件下 ,分别考察了每个化合物与 Et2 Al Cl所组成的催化体系对乙烯齐聚活性和选择性的影响 .在相同条件下 ,催化剂活性顺序为 A>B>C;在最佳反应条件下 ,Ind2 Zr(OC6 H3- 3,5 - Me2 ) 2的催化活性为 195 1g齐聚物 / (g Zr· h) ,C4～ 1 0 烯烃选择性为 95 .0 % ,1- C4～ 1 0 =(直链 α-烯烃 )选择性为 85 .5 % .

Ind 2Zr(OC 6H 3 3,5 Me 2) 2 (A), Ind 2ZrCl(OC 6H 3 3,5 Me 2)(B) and Ind 2ZrCl 2 (C) have been synthesized, and the catalytic activities and selectivities of three binary systems, consisting of A, B, C respectively and Et 2AlCl as co catalyst in ethylene oligomerization have been studied under different reaction temperatures, aging temperatures and various reaction periods. Under the same reaction conditions the catalytic activities of three systems are in the following order: A>B>C. Under optimal reaction conditions, for system A activity is 1 951 g/(g Zr·h), selectivity of C 4～10 olefins is 95.0 % and selectivity of α C 4～10 linear olefins is 85.5 %.