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Ethylene polymerization with a silica-supported iron-based diimine catalyst

Authors

  • Zhi Ma,

    1. State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing Lab of Catalysis, China National Petroleum Corporation Key Lab of Catalysis, Beijing 100080, People's Republic of China
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
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  • Yucai Ke,

    1. State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing Lab of Catalysis, China National Petroleum Corporation Key Lab of Catalysis, Beijing 100080, People's Republic of China
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  • Hang Wang,

    1. State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing Lab of Catalysis, China National Petroleum Corporation Key Lab of Catalysis, Beijing 100080, People's Republic of China
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
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  • Cunyue Guo,

    1. State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing Lab of Catalysis, China National Petroleum Corporation Key Lab of Catalysis, Beijing 100080, People's Republic of China
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
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  • Mingge Zhang,

    1. State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing Lab of Catalysis, China National Petroleum Corporation Key Lab of Catalysis, Beijing 100080, People's Republic of China
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
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  • Wen-Hua Sun,

    1. State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing Lab of Catalysis, China National Petroleum Corporation Key Lab of Catalysis, Beijing 100080, People's Republic of China
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  • Youliang Hu

    Corresponding author
    1. State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing Lab of Catalysis, China National Petroleum Corporation Key Lab of Catalysis, Beijing 100080, People's Republic of China
    • State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing Lab of Catalysis, China National Petroleum Corporation Key Lab of Catalysis, Beijing 100080, People's Republic of China
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Abstract

A supported iron-based diimine catalyst (SC) was prepared by immobilization of 2,6-bis[1-(2,6-diisopropylphenylimino)ethyl]pyridine iron chloride (I) on silica and employed in ethylene polymerization. The kinetic behavior of ethylene polymerization with SC was studied. The effects of the Al/Fe molar ratio, reaction temperature, and cocatalyst on the catalytic activity as well as the melting temperature, molecular weight, and morphology of the polymers obtained were also investigated. The results showed that good catalytic activities can be obtained even with a small amount of the cocatalyst methylaluminoxane (MAO) or triethylaluminum (AlEt3). The polyethylenes obtained with a supported catalyst had higher molecular weight, higher melting temperature, and better morphology than those obtained with a homogeneous catalyst. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 466–469, 2003

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