合成材料老化与应用2024，Vol.53Issue(1)：42-44,3.
载体活化方式对高性能聚丙烯催化剂性能的影响研究
Impact of Support Activation Methods on the Performance of High-Performance Polypropylene Catalysts
摘要
Abstract
This study investigates the influence of support activation methods on the performance of polypropylene catalysts.Four different polypropylene catalysts were prepared using MgCl2 and ethoxy magnesium as supports,coupled with di-isobutyl phthalate(DIBP)and 9,9-bis(hydroxymethyl)fluorene(fluorene diether)as internal electron donors.Comparative analyses were conducted on the elemental composition,particle size and distribution,polymerization performance,and hydrogen sensitivity of the polypropylene catalysts.The results reveal that the elemental composition of the four catalysts is essentially consistent,with polypropylene catalysts prepared using ethoxy magnesium as the support exhibiting higher specific surface areas.The particle size distribution of both the polypropylene catalysts and the resultant polymers is generally uniform,characterized by concentrated particle size distributions and a minimal fines content.All four catalysts demonstrate high polymerization activity,with the catalyst prepared using ethoxy magnesium as the support and fluorene diether as the internal electron donor exhibiting superior polymerization activity.Additionally,the influence of fluorene diether on the hydrogen sensitivity of the catalyst is more pronounced compared to DIBP.关键词
Ziegler-Natta催化剂/载体/聚丙烯/内给电子体/外给电子体Key words
Ziegler-Natta catalysts/supports/polypropylene/internal electron donors/external electron donors分类
化学化工引用本文复制引用
高金龙,张眉,王勇,干昌舒,李婧,石振宏,宗国庆..载体活化方式对高性能聚丙烯催化剂性能的影响研究[J].合成材料老化与应用,2024,53(1):42-44,3.基金项目
陕西工业职业技术学院科研支撑项目(编号:2021YKYB-058). （编号:2021YKYB-058）
