丙烯聚合N高效催化剂的研究 Ⅱ.催化剂体系内外给电子体的作用  

Study on the N-High Efficiency Catalyst for Propylene Polymerization Ⅱ.The Functions of the Internal and External Electron Donors in the Catalyst System

作　　者：夏先知[1] 毛炳权[1] 

机构地区：[1]化工部北京化工研究院,北京100013

出　　处：《石油化工》1992年第8期507-511,共5页Petrochemical Technology

基　　金：国家自然科学基金

摘　　要：通过对聚合动力学曲线、催化剂活性、催化剂的定向能力、聚合物分子量、活性中心浓度(C_p)和链增长速度常数(K_p)等比较,研究了N-催化剂体系内外给电子体在催化丙烯聚合中的作用。结果表明,内给电子体可明显地改变聚合动力学曲线,外给电子体则无影响。内外给电子体均能提高催化活性和定向能力,但它们对C_p和K_p的影响却各不相同。A study has been made on the effects of the internal and external donors in the N-catalyst system on the polymerization kinetic curves, the activities, the stereo-regularity, the molecular weight of the polymer, the concentration of the active centre(C_p) and the chain propagation rate constant(k_p). It was found that the internal donor affected the kinetic curves apparently, but the external donor did not. Both the internal donor and the external donor increased the activity and the stereo-regularity. The main effects of the internal and the external donors on C_p and k_p were different.

关 键 词：催化丙烯聚合 N-催化剂 电子体 

分 类 号：TQ426.8[化学工程]