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J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Binuclear vanadium complex as catalyst for olefin polymerization

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双核钒配合物催化烯烃聚合的研究

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Jul.2023, Vol.46 No.7: 900-905

DOI: 10.3969/j.issn.1003-5060.2023.07.006

Authors

NIE Jinxin, REN Feiyang, CHEN Xiaojian, HOU Xiaohua

(School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China)

Abstract and Keywords

Abstract: This paper synthesized a series of binuclear vanadium complexes(B1~B3) from imido vanadium complex using various biphenol as linker. The vanadium complexes were characterized by nuclear magnetic resonance(NMR) spectra and elemental analysis. Under the activation of aluminum reagents as cocatalyst, the complex exhibited good activity in norbornene polymerization and formed the ROMP product. The complex showed high activity in ethylene polymerization and obtained the ultrahigh molecular weight polyethylene( $ M_{n} $ was up to $ 1.84 \times 10^{6} $). Especially the complex still showed good activity(up to 654 kg/(mol·h)) in the copolymerization with polar monomers such as 10-undecen-1-ol(UOH) and methyl 10-undecenoate(UA).

Keywords: catalyst; polyolefin; vanadium complex; polar monomer; copolymerization

作者信息

聂金鑫，任飞扬，陈小建，侯小华

（合肥工业大学化学与化工学院，安徽合肥230009）

摘要和关键词

摘要: 文章从含有酰亚胺配体的五价钒三氯化物出发，以不同结构的双酚类试剂为连接单元，成功合成了一系列双核钒的二氯化物（B1～B3），并进行了核磁共振和元素分析表征。在烷基铝助催化剂的作用下，双核钒配合物在降冰片烯的均聚中表现出良好的催化活性，得到具有开环易位结构的聚合物；在乙烯均聚中则表现出极高的催化活性，得到超高分子量聚乙烯，其数均分子量达到了 $ 1.84\times10^{6} $；在乙烯与极性单体（如十一烯醇或十一烯酸甲酯）的共聚中表现出很高的催化活性（活性可达 $ 654\ \mathrm{kg/(mol\cdot h)} $），成功制备出相应的烯烃共聚物。

关键词: 催化剂；聚烯烃；钒配合物；极性单体；共聚反应

Funding

国家自然科学基金资助项目（21901057）；安徽省自然科学基金资助项目（1908085QB62）

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