High efficiency supported ethylene polymerization catalysts of TiCl 4 -Ni(acac) 2/MgCl 2 SiO 2 ZnCl 2/AlR 3 promoted with SiCl 4(A) and PPh 3(B) were prepared.

• 制备了SiCl4、PPh3促进的MgCl2 -SiO2 -ZnCl2 为载体 ,TiCl4/Ni(acac) 2 为主催化剂的A、B型乙烯聚合高效催化剂。