CrO_3/SiO_2/MAO催化剂上的乙烯气相聚合  

Gas Phase Ethylene Polymerization with CrO_3/SiO_2/MAO Catalytic System

作　　者：李留忠[1] 达建文[1] 张廷山[1] 任红[1] 于元章[1] 

机构地区：[1]齐鲁石油化工公司研究院,山东淄博255400

出　　处：《石油化工》2001年第10期757-759,共3页Petrochemical Technology

摘　　要：制备了一种新型的CrO3/SiO2 /MAO乙烯聚合催化剂 ,研究了催化剂制备配方和气相聚合反应条件对催化剂聚合活性和聚合物性能的影响。结果表明 ,该催化剂聚合活性高 ,聚合物的熔体指数较低 ,MAO与EtOAlEt2 共同使用作为还原助剂时得到的催化剂具有敏感的临氢效应。A novel catalytic system of CrO 3/SiO 2/MAO for ethylene polymerization was prepared in the laboratory,and the effect of preparation formulation and polymerization conditions on catalytic activity and product properties were investigated.The results show that the catalytic system exhibits high activity in gas phase ethylene polymerization,and relatively low melt flow index of resin product,and the catalyst with both MAO and EtOAlEt 2 as cocatalysts possesses high hydrogen sensitivity.

关 键 词：乙烯 气相聚合 CrO3/SiO2/MAO催化剂 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业] TQ320.4