Ethylene homo- and copolymerization catalyzed by vanadium, zirconium, and titanium complexes having potentially tridentate Schiff base ligands
作者:Marzena Białek、Julia Fryga、Grzegorz Spaleniak、Mikhail A. Matsko、Natalia Hajdasz
DOI:10.1016/j.jcat.2021.05.036
日期:2021.8
they were reacted with VOCl3 or MCl4 (where M = Zr or Ti) to produce corresponding complexes (L1-V, L2-V, L1-Zr, L2-Ti) with good yields. All new compounds were characterized by the 1H and 13C NMR as well as FTIR spectroscopic methods. Upon activation with Et2AlCl or EtAlCl2, both the vanadium complexes exhibited exceptionally high catalytic activities in the ethylene polymerization (up to 69,000 kg/(molV⋅h)
新的潜在三齿席夫碱配体,2-[(4-[(3- N , N-二甲氨基)丙基]苯基}亚氨基)甲基]-4,6-二叔丁基苯酚 ( L 1 H ) 和 2-制备[2-( N-苯基-N-甲基氨基甲基)-苯基亚氨基}-甲基]-4,6-二叔丁基苯酚( L 2 H ),并在去质子化后与VOCl 3或MCl 4 (其中M = Zr 或 Ti) 产生相应的配合物 ( L 1 -V , L 2 -V , L 1 -Zr, L 2 -Ti ) 具有良好的产率。所有新化合物均通过1 H 和13 C NMR 以及 FTIR 光谱方法进行表征。在用 Et 2 AlCl 或 EtAlCl 2活化后,这两种钒配合物在乙烯聚合中表现出异常高的催化活性(L 1 -V高达 69,000 kg/(mol V ⋅h)和 101,500 kg/(mol V ⋅h)对于大号2 -V)和显着的热稳定性,并且由它们制成的UHMWPE。4族