Zirconadihydrophosphetes as highly active species for ethylene polymerization

被引：11
|
作者：
Hao, Peng [1 ,2 ]
Zhang, Shu [1 ,2 ]
Yi, Jianjun [3 ]
Sun, Wen-Hua [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
[3] PetroChina Co Ltd, Petrochem Res Inst, Beijing 100083, Peoples R China
来源：
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2009年 / 302卷 / 1-2期
关键词：
Zirconadihydrophosphetes; Ethylene polymerization; Copolymerization; Active species; Mechanism; OLEFIN POLYMERIZATION; BENZYL COMPLEXES; CATALYSTS; ALKYL; COPOLYMERIZATION; METALLOCENES; CHEMISTRY; LIGANDS;
D O I：
10.1016/j.molcata.2008.11.023
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：
The zirconadihydrophosphetes showed high activities for ethylene polymerization as well as copolymerization with alpha-olefins or norbornene in the presence of methylaluminoxane (MAO) as cocatalyst. The alkylated intermediates as the active species were confirmed by NMR measurement. The cause for their high catalytic activities is assumed to the disassociation and coordination of the ethylene-bridged phosphine to the zirconium species. A plausible mechanism for the polymerization is proposed. (C) 2008 Elsevier B.V. All rights reserved.
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页码：1 / 6
页数：6
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