中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Preparation of silica-supported late transition metal catalyst and ethylene polymerization

文献类型:期刊论文

作者Ma, Z; Sun, WH; Zhu, N; Li, ZL; Shao, CX; Hu, YL
刊名POLYMER INTERNATIONAL
出版日期2002-04-01
卷号51期号:4页码:349-352
关键词Late Transition Metal Catalyst Silica-support Ethylene Polymerization
ISSN号0959-8103
DOI10.1002/pi.853
英文摘要The late transition metal catalyst 2,6-bis[1-(2,6-diisopropylphenylimino)ethyllpyridine iron(II) chloride was supported on silica. Fourier transform infrared spectroscopy, scanning electronic micrograph and X-ray photoelectron spectroscopy measurements were utilized to examine the process of supporting catalyst on silica and investigate the possible mechanism of support. Furthermore, ethylene polymerizations with the supported catalysts were carried out in various conditions such as different reaction temperatures and Al/Fe molar ratios. The results showed that MAO first reacted with the hydroxyl of silica forming Si-O-Al bonds and then the catalyst was bridged through MAO on the surface of silica. Compared with homogeneous catalysts, the supported catalysts show some decrease in catalyst activity. However, they can show good activity at a lower Al/Fe molar ratio with MAO as co-catalyst and give rise to higher molecular weight and melting temperature of the polymer. Better morphology of polyethylene was obtained by a supported catalyst than by its corresponding homogeneous catalyst. (C), 2002 Society of Chemical Industry.
语种英语
WOS记录号WOS:000175026200009
出版者JOHN WILEY & SONS LTD
源URL[http://ir.iccas.ac.cn/handle/121111/79031]  
专题中国科学院化学研究所
通讯作者Sun, WH
作者单位Chinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Engn Plast, Beijing 100080, Peoples R China
推荐引用方式
GB/T 7714
Ma, Z,Sun, WH,Zhu, N,et al. Preparation of silica-supported late transition metal catalyst and ethylene polymerization[J]. POLYMER INTERNATIONAL,2002,51(4):349-352.
APA Ma, Z,Sun, WH,Zhu, N,Li, ZL,Shao, CX,&Hu, YL.(2002).Preparation of silica-supported late transition metal catalyst and ethylene polymerization.POLYMER INTERNATIONAL,51(4),349-352.
MLA Ma, Z,et al."Preparation of silica-supported late transition metal catalyst and ethylene polymerization".POLYMER INTERNATIONAL 51.4(2002):349-352.

入库方式: OAI收割

来源:化学研究所

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