一种后过渡金属催化剂催化乙烯低聚动力学研究  

THE BEHEAVIOR OF ETHYLENE OLIGOMERIZATION CATALIZED BY A NOVEL LATE METAL-TRANSITION CATALYST

作　　者：姜涛[1] 闫卫东[2] 王航[1] 刘彬彬[3] 徐文清[3] 马建江[3] 胡友良[1] 

机构地区：[1]中国科学院化学研究所分子科学中心工程塑料国家重点实验室,北京100080 [2]河北工业大学化工学院高分子科学与工程研究所,天津300130 [3]新疆独山子石化公司研究院,独山子833600

出　　处：《高分子学报》2002年第3期293-296,共4页Acta Polymerica Sinica

基　　金：国家自然科学重点基金 (基金号 2 973 414 1);工程塑料国家重点实验室开放基金 (基金号SKLEP0 0 62 );河北省教育厅 2 0 0 1年科学研究计划资助项目 (2 0 0 110 9)

摘　　要：设计并合成了一种新型的后过渡金属铁络合物 { [(2 ArNC(Me) ) 2 C5H3N]FeCl2 } (Ar =2 ,4 C6 H4(CH3) 2 ) ,研究了该络合物 甲基铝氧烷 (MAO)催化乙烯低聚 ,讨论了低聚反应温度、Al Fe摩尔比、催化剂浓度、反应压力等对催化剂活性及反应速率的影响 .本催化剂的最大特点是活性高 (在 30℃ ,3 0MPa时活性可达 4 2 6× 10 8goligomer·molFe·h- 1 )、初速度大 ,动力学曲线为衰减型 .A new late metal-transition complex {[(2-ArN=C(Me))(2)-C5H3N]FeCl2\Ar = 2,4-C6H4(CH3)(2)} was designed and synthesized. The behavior of ethylene oligomenization catalyzed by this complex with NIAO as cocatalyst has been studied. The effects of temperature, Al/Fe molar ratio, the concentration of catalyst and ethylene pressure on the catalytic activity and the rate of oligomerization were investigated. It was found that the catalyst is characterized by its high activity (the maximum is up to 4.25 x 10(8) g oligomer/molFe.h at 30degreesC, and 3.0 MPa) and high initial reaction rate. The kinetic curves obtained is of decay type.

关 键 词：乙烯 低聚 后过渡金属催化剂 反应动力学 低密度聚乙烯 

分 类 号：TQ316.3[化学工程—高聚物工业]