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Dynamic modeling and experimental evaluation of olefin copolymerization with vanadium-based catalysts

机译:钒基催化剂共聚烯烃的动力学模型与实验评价

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In this study, we developed a mathematical model for olefin copolymerization using soluble Ziegler-Natta catalysts in a semibatch reactor to predict the reaction rate and polymer characteristics (i.e., molecular weight, polydispersity, and ethylene content) as functions of the reaction parameters (i.e., time, temperature, pressure, concentrations, and so on) accurately. The proposed model differs from others because it considers the olefin copolymerization as a dynamic process and applies double moments for two reactants (ethylene and propylene) in the presence of hydrogen. To establish the model validity, the copolymerization was performed with VOCl3-Al2Et3Cl3 systems with hydrogen as a molecular weight controlling agent. The dynamic model was able to reproduce the experiment at data within experimental accuracy and accurately demonstrated the fundamental importance of the polymerization variables on the final properties of the polymer material in the copolymerization of ethylene and propylene with AI/V ratios of up to 28 before synthesis. (c) 2006 Wiley Periodicals, Inc.
机译:在这项研究中,我们开发了在半间歇反应器中使用可溶性齐格勒-纳塔催化剂的烯烃共聚数学模型,以预测反应速率和聚合物特性(即分子量,多分散性和乙烯含量)作为反应参数(即,时间,温度,压力,浓度等)。提出的模型与其他模型有所不同,因为它认为烯烃共聚是一个动态过程,并且在氢存在下对两种反应物(乙烯和丙烯)施加双矩。为了确定模型的有效性,使用VOCl3-Al2Et3Cl3体系以氢作为分子量控制剂进行共聚。该动力学模型能够在实验精度范围内的数据下再现实验,并准确地证明了聚合变量对于乙烯/丙烯以高达28的AI / V比共聚的聚合材料的最终性能的根本重要性。 。 (c)2006年Wiley Periodicals,Inc.

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