石油化工2011，Vol.40Issue(3)：264-267,4.
邻苯二甲酸二异辛酯对MgCl2-SiO2负载Ziegler-Natta催化剂催化乙烯聚合的影响
Effect of Di-iso-Octyl Phthalate on MgCl2-SiO2 Supported Ziegler-Natta Catalyst for Ethylene Polymerization
摘要
Abstract
The influence of the molar ratio of di-iso-octyl phthalate(DIOP) as internal donor to magnesium chloride on the catalyst structure and its catalytic activity in ethylene/l-hexene copolymerization with SiO2-MgCl2 supported Ziegler-Natta catalyst. The catalysts were characterized by means of BET, SEM and XRD. The results indicated that adding DIOPcould improve morphology and uniformity of the catalyst particles. Along with the increase of DIOP dosage, the catalyst activity decreased, and bulk density and melt index of the resulted product first increased and then decreased.When n(DIOP): n(Mg) was0.10,the bulk density and the melt index( 10 min) of the product and the mass fraction of 75 -750 μm product particles were 0. 35 g/cm3 ,0. 18 g and 98. 36％ ,respectively.关键词
MgCl2-SiO2复合载体/Ziegler-Natta催化剂/邻苯二甲酸二异辛酯/乙烯聚合Key words
MgCl2-SiO2 composite support/ Ziegler-Natta catalyst/ di-iso-octyl phthalate/ ethylene polymerization分类
化学化工引用本文复制引用
白鹏,王路海,任合刚,张瑞,杨敏,刘宾元..邻苯二甲酸二异辛酯对MgCl2-SiO2负载Ziegler-Natta催化剂催化乙烯聚合的影响[J].石油化工,2011,40(3):264-267,4.基金项目
中国石油天然气股份有限公司资助项目(0604A18-11) （0604A18-11）
河北省科技支撑计划项目(09215110D) （09215110D）
天津市自然科学基金项目(08JCYBJC02500) （08JCYBJC02500）
河北省自然科学基金项目(B2008000009). （B2008000009）
