Immobilization of a zirconium complex bearing bis(phenoxyketimine) ligand on MCM-41 for ethylene polymerization

doi:10.1016/j.polymer.2005.09.033

CORC > 化学研究所 > 中国科学院化学研究所

	Immobilization of a zirconium complex bearing bis(phenoxyketimine) ligand on MCM-41 for ethylene polymerization
	Chen, ST ; Guo, CY ; Liu, L ; Xu, H ; Dong, JX ; Hu, YL
刊名	POLYMER
	2005-11-21
卷号	46 期号:24 页码:11093-11098
关键词	Immobilization Mcm-41 Ethylene Polymerization
ISSN号	0032-3861
DOI	10.1016/j.polymer.2005.09.033
英文摘要	A novel zirconium complex bearing bis(phenoxyketimine) ligand (1) bis((3,5-di-tert-butyl-C6H2-2-O)PhC=N(2,4-di-fluoro-C6H3))ZrCl2 (2) was prepared and successfully immobilized on a mesoporous molecular sieve MCM-41 in chemical method. Results of slurry polymerization of ethylene with MCM-41-supported catalyst (MC) indicated that the morphologies of polyethylene obtained differed greatly in heptane and toluene. Homogeneous catalyst 2 exhibited a very high initial activity in ethylene polymerization at room temperature resulting in great viscosity of the system. When immobilized on MCM-41, MC showed a smooth yet highly active kinetic behavior. With MAO as the cocatalyst, the effects of Al/Zr molar ratio and polymerization temperature on catalytic activity and properties of polyethylene obtained were investigated. The results showed that polyethylene obtained with MC possessed higher molecular weight (M-n) and broader molecular weight distribution (M-w/M-n) than those formed with its homogeneous counterpart. (c) 2005 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000233144700055
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/55991]
专题	中国科学院化学研究所
通讯作者	Guo, CY
作者单位	1.Chinese Acad Sci, Inst Chem, KJoint Lab Polymer Sci & Mat, Key Lab Engn Plast, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Taiyuan Univ Technol, Res Inst Special Chem, Taiyuan 030024, Peoples R China
推荐引用方式 GB/T 7714	Chen, ST,Guo, CY,Liu, L,et al. Immobilization of a zirconium complex bearing bis(phenoxyketimine) ligand on MCM-41 for ethylene polymerization[J]. POLYMER,2005,46(24):11093-11098.
APA	Chen, ST,Guo, CY,Liu, L,Xu, H,Dong, JX,&Hu, YL.(2005).Immobilization of a zirconium complex bearing bis(phenoxyketimine) ligand on MCM-41 for ethylene polymerization.POLYMER,46(24),11093-11098.
MLA	Chen, ST,et al."Immobilization of a zirconium complex bearing bis(phenoxyketimine) ligand on MCM-41 for ethylene polymerization".POLYMER 46.24(2005):11093-11098.