电子顺磁共振在Ziegler-Natta催化剂研究中的应用进展  

Application progress of electron paramagnetic resonance in researches of Ziegler-Natta catalysts

作　　者：唐树轩 刘海涛[1] 李昌秀[1] TANG Shuxuan;LIU Haitao;LI Changxiu(Sinopec(Beijing)Research Institute of Chemical Industry Co.,Ltd.,Beijing 100013,China)

机构地区：[1]中石化(北京)化工研究院有限公司,北京100013

出　　处：《石油化工》2023年第6期855-861,共7页Petrochemical Technology

摘　　要：Ziegler-Natta催化剂的相关研究是聚烯烃领域的关键。电子顺磁共振(EPR)是表征Ziegler-Natta催化剂中顺磁性Ti组分的有效手段。介绍了EPR的相关原理,综述了应用EPR探究给电子体、聚合单体、无机小分子、烷基铝、格氏试剂、氧化物、L酸和钛含量等因素对Ziegler-Natta催化剂的影响,以及脉冲EPR技术在Ziegler-Natta催化剂科研前沿的应用,并对EPR应用于Ziegler-Natta催化剂研究进行了展望。The research on Ziegler-Natta catalysts is key in the field of polyolefin.Electron paramagnetic resonance(EPR)is confirmed as an effective method in the characterization of the paramagnetic Ti component in Ziegler-Natta catalyst.The mechanism of EPR is introduced.Then the effects of electron donor,polymeric monomer,inorganic small molecule,alkyl aluminum,Grignard reagent,oxide,L acid and titanium content on Ziegler-Natta catalysts,which are explored using EPR technology,are reviewed.The application of pulse EPR technology on the research frontier of Ziegler-Natta catalyst is given,followed by an outlook of EPR on Ziegler-Natta catalyst studies.

关 键 词：ZIEGLER-NATTA催化剂 电子顺磁共振 电子自旋共振 烯烃聚合 

分 类 号：TQ426.94[化学工程]