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	Ethylene polymerization with silica-supported bis(imino)pyridyl iron(ii) catalysts
	Zheng, ZJ; Liu, JY; Li, YS
刊名	Journal of catalysis
	2005-08-15
卷号	234期号:1页码:101-110
关键词	Silica support Iron catalyst Heterogeneous catalysis Ethylene polymerization
ISSN号	0021-9517
DOI	10.1016/j.jcat..2005.05.022
通讯作者	Li, ys()
英文摘要	Two strategies have been developed to prepare silica-supported bis(imino)pyridyl fe(ii) catalysts for ethylene polymerization. the bis(imino)pyridyl ligands were modified by the introduction of reactive ethoxysilane or si-cl end groups, allowing the immobilization of them via the direct reaction of the ethoxysilane or si-cl groups with the silanols on the silica surface. the resultant silica-supported bis(imino)pyridyl ligands were characterized by analytical and spectroscopic (nmr, raman, ftir, and xps) techniques. the complexation reactions of the supported ligands with fecl2 center dot 4h(2)o give rise to silica-supported fe(ii) precatalysts, which exhibit high catalytic activities for ethylene polymerization in the presence of modified methylaluminoxane (mmao). the molecular weights of the polyethylenes obtained with the supported precatalysts are much higher than those produced with corresponding homogeneous fe(ii) precatalyst under the same conditions. (c) 2005 elsevier inc. all rights reserved.
WOS关键词	TRANSITION-METAL-COMPLEXES ; CROSS-LINKED POLYSTYRENE ; OLEFIN POLYMERIZATION ; METALLOCENE CATALYSTS ; MESOPOROUS SILICA ; DIIMINE CATALYSTS ; COBALT ; COPOLYMERIZATION ; IMMOBILIZATION ; OLIGOMERIZATION
WOS研究方向	Chemistry ; Engineering
WOS类目	Chemistry, Physical ; Engineering, Chemical
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000231326200011
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2377864
专题	中国科学院大学
通讯作者	Li, YS
作者单位	Acad Sinica, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Grad Sch, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Zheng, ZJ,Liu, JY,Li, YS. Ethylene polymerization with silica-supported bis(imino)pyridyl iron(ii) catalysts[J]. Journal of catalysis,2005,234(1):101-110.
APA	Zheng, ZJ,Liu, JY,&Li, YS.(2005).Ethylene polymerization with silica-supported bis(imino)pyridyl iron(ii) catalysts.Journal of catalysis,234(1),101-110.
MLA	Zheng, ZJ,et al."Ethylene polymerization with silica-supported bis(imino)pyridyl iron(ii) catalysts".Journal of catalysis 234.1(2005):101-110.

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