自负载吡啶双亚胺酸酯钒(Ⅲ)催化剂的合成及催化乙烯聚合

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英文篇名：Self-immobilization of Alkenyl-Functionalized Bis (imidate) pyridine Vanadium(Ⅲ) Complexes for Ethylene Homo(co) polymerization 作者：梁姗姗 ; 刘恒 ; 胡雁鸣 ; 张学全 英文作者：LIANG Shanshan;LIU Heng;HU Yanming;ZHANG Xuequan;College of Material Science and Engineering,Shenyang University of Chemical Technology;Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials; 关键词：自负载 ; 钒催化剂 ; 聚烯烃 英文关键词：self-immobilization;;vanadium precatalyst;;polyolefin 中文刊名：应用化学 英文刊名：Chinese Journal of Applied Chemistry 机构：沈阳化工大学材料科学与工程学院;中国科学院长春应用化学研究所,中国科学院高性能合成橡胶及其复材重点实验室; 出版日期：2019-10-10 出版单位：应用化学 年：2019 期：10 基金：吉林省科技厅优秀青年基金项目(20190103122JH)项目资助~~ 语种：中文; 页：38-44 页数：7 CN：22-1128/O6 ISSN：1000-0518 分类号：O643.36;O632.12

摘要

合成了一系列自负载吡啶双亚胺酸酯钒(Ⅲ)催化剂(V(Ⅲ)),并通过傅里叶变换红外光谱仪(FTIR)、元素分析及核磁共振波谱仪(NMR)等技术手段对配合物进行了表征。在倍半乙基氯化铝(EASC)活化下,V(Ⅲ)催化剂对乙烯聚合表现出很高的催化活性(7. 2～12. 1 g/(mol·h·Pa)),且自负载基团的链长对催化剂的活性及所得聚合物的性质影响较小。同时,该类V催化剂催化乙烯与1-己烯共聚合性能良好,得到高相对分子质量(高达68. 1×10~3)的聚合物。所得聚合物经扫描电子显微镜(SEM)表征,其微观结构为片层叠加结构。
        A series of alkenyl-functionalized bis( imidate) pyridine vanadium V( Ⅲ) complexes was synthesized and used for olefin polymerization in a self-immobilization mode. All the complexes were wellcharacterized by Fourier transform infrared spectrometer( FTIR),elemental analysis and nuclear magnetic resonance spectroscopy( NMR). Being activated by ethylaluminum sesquichloride( EASC),the V( Ⅲ)complexes displayeded high activity in ethylene polymerization( 7. 2 ～ 12. 1 g/( mol·h·Pa)). Additionally,the length of self-immobilized alkenyl chains showed a little influence on the catalytic activity of the precatalysts. These V( Ⅲ) complexes also exhibited high activity in initiating ethylene/1-hexene copolymerization,affordiong copolymer products with high molecular weight( up to 68. 1 × 10~3). Scanning electron microscope( SEM) studies showed that the polymer products formed platelet clusters.

引文

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