烷基铝氧烷的合成以及在单中心催化剂中的作用  

Synthesis of Alkylaluminoxane and Catalytic Effect of Alkylaluminoxane in Single-site Catalysts

作　　者：吴红飞 Wu Hongfei(Sinopec Beijing Research Institute of Chemical Industry Yanshan Branch,National Engineering Research Center for Synthesis of Novel Rubber and Plastic Materials,Beijing 102500,China)

机构地区：[1]中国石化北京化工研究院燕山分院橡塑新型材料合成国家工程研究中心,北京102500

出　　处：《广东化工》2024年第9期14-16,共3页Guangdong Chemical Industry

摘　　要：烷基铝氧烷作为助催化剂广泛用于茂金属催化剂和非茂金属催化剂(如FI催化剂、后过渡金属催化剂)等单活性中心催化体系,显著提高了催化活性,促进了聚烯烃工业的迅速发展。特别地,甲基铝氧烷与茂金属催化剂的组合,使得诸多微观结构精确可调的高性能聚烯烃材料(如茂金属聚乙烯、茂金属聚丙烯、茂金属乙丙橡胶、茂金属弹性体等)的生产成为可能。烷基铝氧烷成本高昂,与活性中心的相互作用对催化性能有很大的影响。本文对烷基铝氧烷的合成方法、结构分析手段和发挥助催化作用的机理等情况进行了综述。Alkylaluminoxanes are widely used as co-catalysts in single-site catalysts,including metallocene catalysts as well as non-metallocene catalysts such as FI catalysts and post-transition metal catalysts,which have significantly improved the catalytic activity and facilitated the rapid development of polyolefin industry.In particular,the combination of methylaluminoxane(MAO)and metallocene catalysts makes it possible to produce high-performance polyolefin materials with precisely adjustable microstructures,for instance,metallocene polyethylene(mPE),metallocene polypropylene(mPP),metallocene ethylene-propylene rubber(mEPDM),polyolefin elastomer(POE).Alkylaluminoxanes are costly and the interaction with the active centre can have a great impact on the catalytic performance.An overview of the synthetic methods,structural analysis methods and mechanisms by which alkylaluminoxanes exert a co-catalytic effect is given.

关 键 词：烷基铝氧烷 单中心催化 助催化剂 烯烃聚合 甲基铝氧烷 

分 类 号：TQ314.24[化学工程—高聚物工业]