甲基铝氧烷表征研究进展  

Advances in characterization of methylaluminoxane

作　　者：韦少义[1] 张长军[2] 邬霞萍[2] 贾军纪[2] 徐贤伦[1] 

机构地区：[1]中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室,甘肃兰州730000 [2]中国石油兰州石化公司石油化工研究院,甘肃兰州730060

出　　处：《石化技术与应用》2005年第6期477-480,共4页Petrochemical Technology & Application

基　　金：中国石油天然气集团公司资助项目(040402-17-00)。

摘　　要：介绍了甲基铝氧烷(MAO)的表征方法,讨论了MAO中三甲基铝(TMA)含量的测定、MAO相对分子质量的测定与结构表征。介绍了化学滴定法、光谱分析法、冰点降低法和密度函数理论(DFT)量子化学计算等方法在MAO表征中的应用,论述了MAO的各种表征方法存在的局限性。Methods for characterization of methylaluminoxane (MAO), used as a cocatalyst for olefin polymerization were reviewed. The determination of trimethylaluminum content in MAO, the relative molecular mass and the structural characterization of MAO were discussed mainly. The application of titrimetric method, spectral analysis such as NMR and UV/VIS, crioscopic method, and density functional theory quantum chemical calculations etc. in characterization of MAO were described. Limitations of the methods for the characterization were also discussed.

关 键 词：甲基铝氧烷 三甲基铝 结构 相对分子质量 

分 类 号：TQ426.98[化学工程]