氟化改性固体甲基铝氧烷负载茂金属催化剂的研究

摘要在茂金属催化剂聚合烯烃领域中,甲基铝氧烷(MAO)是常见的助催化剂,将甲基铝氧烷固化形成固体甲基铝氧烷(sMAO)可以起到助催化剂和载体的双重作用。以加入不同的氟代烷烃和氟代芳烃类化合物对sMAO进行改性。同时用双(1-丁基-3-甲基环戊二烯基)二氯化锆为茂金属活性组分负载到改性载体上,得到负载型茂金属催化剂,并用于乙烯淤浆聚合。使用十氟联苯、全氟己烷、1-氢全氟己烷作为改性剂,制备的改性催化剂的活性为1.58×10⁶、1.42×10⁶和1.46×10⁶ g·mol^-1,与改性前相比活性提升了17%~30%。

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	邓修远
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关键词：茂金属催化剂改性剂氟代烷烃淤浆聚合甲基铝氧烷

Abstract： In the field of metallocene catalyst polymerization of olefins, methylaluminoxane (MAO) is a common cocatalyst. Curing methylaluminoxane to form solid methylaluminoxane (sMAO) can play a dual role as a cocatalyst and carrier. In this study, sMAO is modified by adding different fluoroalkanes and fluoroaromatic compounds. Simultaneously, bis (1-butyl-3-methylcyclopentadienyl) zirconium dichloride was loaded onto a modified carrier as the active component of the metallocene to obtain a supported metallocene catalyst, which was used for ethylene slurry polymerization. Among them, using decafluorobiphenyl, perfluorohexane, and 1-hydroperfluorohexane as modifiers, and the activity of the prepared modified catalyst was 1.58×10⁶,1.42×10⁶ and 1.46×10⁶ g·mol^-1, showing 17% to 30% increase in activity compared to that before modification.

Keywords： metallocene catalyst modifiers fluoroalkanes slurry polymerization solid methylaluminoxane

Received 2024-02-17;

Corresponding Authors: 李健,教授,lijian@tust.edu.cn。 Email: lijian@tust.edu.cn

About author: 邓修远(1998—),男,硕士研究生,现从事茂金属催化乙烯聚合方面的研究。

引用本文:

邓修远, 王立娟, 姜涛, 李健.氟化改性固体甲基铝氧烷负载茂金属催化剂的研究[J]. 化学工业与工程, 2025,42(2): 28-34

DENG Xiuyuan, WANG Lijuan, JIANG Tao, LI Jian.Study on fluorinated modified solid methylaluminoxane supported metallocene catalysts[J]. Chemcial Industry and Engineering, 2025,42(2): 28-34

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