Effect of aryloxo ligand for ethylene polymerization by (arylimido)(aryloxo)vanadium(V) complexes-MAO catalyst systems: attempt for polymerization of styrene

被引：42

作者：

Wang, W ^{[1
]}

Yamada, J ^{[1
]}

Fujiki, M ^{[1
]}

Nomura, K ^{[1
]}

机构：

[1] NAIST, Grad Sch Mat Sci, Nara 6300101, Japan

来源：

CATALYSIS COMMUNICATIONS | 2003年 / 4卷 / 04期

关键词：

ethylene polymerization; vanadium; homogeneous catalysis; ligand effect;

D O I：

10.1016/S1566-7367(03)00028-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ethylene polymerization using (arylimido)(aryloxo)vanadium complexes of type, VCl2(N-2,6-Me2C6H3)(OAr) [OAr = O-2,6-Me2C6H3 (1), O-2,6-(i) Pr-2 C6H3 (2), O-2,6-Ph2C6H3 (3), and O-2,6-Bu-i(2)-4-MeC6H2 (4)], has been explored in the presence of MAO. The substituents on the aryloxo ligand were found to play an essential role for the catalytic activity, and effect of both Al/V molar ratio and temperature for the activity depended upon the substituents. High catalytic activity was observed especially at low temperature of 0 degreesC when 3 was used as the catalyst precursor, whereas 1 showed the highest activity at 25 degreesC. However, 2-MAO catalyst showed extremely low activity for styrene polymerization. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：159 / 164

页数：6

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