吡唑基配体-Cr(Ⅲ)-MAO催化乙烯齐聚  

Ethylene Oligomerization Catalyzed by Pyrazolyl Ligand-Cr(Ⅲ)-MAO

作　　者：董博[1] 孙月明[1] 王媚[1] 陈延辉[1] 姜涛[1] 

机构地区：[1]天津科技大学材料科学与化学工程学院,天津300457

出　　处：《石油学报（石油加工）》2015年第1期51-55,共5页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金委员会-中国石油天然气集团公司石油化工联合基金(U1162114)资助

摘　　要：采用吡唑基配体、铬化合物和甲基铝氧烷（MAO）构建的三元催化体系催化乙烯齐聚反应,考察了反应温度、反应压力、n（Al）/n（Cr）、溶剂种类等条件对该催化体系催化乙烯齐聚性能的影响。结果表明,3,5-二甲基吡唑-CrCl3（THF）3-MAO三元催化体系催化乙烯齐聚表现出良好的催化活性和线性α-烯烃的选择性,催化活性可达4.19×106 g/（mol Cr·h）,线性α-烯烃的选择性达到97.89%,其中1-C=6~1-C=12线性α-烯烃的选择性达到66.28%。The catalytic systems of pyrazolyl ligand,chromium compound and methylaluminoxane（MAO）were set up for ethylene oligomerization toward linear α-olefin.The effects of reaction temperature,reaction pressure,Al/Cr molar ratio and solvent type on the performance of the catalytic systems for ethylene oligomerization were investigated.The results revealed that the catalytic system of 3,5-dimethylpyrazole-CrCl3（THF）3-MAO showed good catalytic activity and selectivity of linear α-olefin in ethylene oligomerization.The catalytic activity was up to 4.19×106 g/（mol Cr·h）with the selectivity to linear α-olefin of 97.89% and 1-C6=-1-C12=selectivity of 66.28%.

关 键 词：吡唑 铬化合物 乙烯齐聚 线性Α-烯烃 

分 类 号：TQ316.3[化学工程—高聚物工业]