Ethylene polymerization kinetics with a heteregeneous catalyst - Comparison of gas and slurry phases

M.F. Bergstra, G. Weickert

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    26 Citations (Scopus)


    Ethylene homopolymerizations were executed with a supported Ind2ZrCl2/MAO catalyst using the so-called Reactive Bed Preparation method. This RBP method combined a slurry polymerization with a gas phase polymerization with the same polymerizing particles, i.e., a reactive bed. Polymerization kinetics were measured with high accuracy and reproducibility. Slurry and gas phase polymerization rates showed the same dependency on monomer bulk concentration. A complexation model has been proposed to describe the non-first order polymerization rate-monomer concentration dependence observed. This model also explains the non-Arrhenius temperature dependence and the observed pressure dependence of the activation energy of the commonly used polymerization rate model.
    Original languageUndefined
    Pages (from-to)610-620
    Number of pages11
    JournalMacromolecular materials and engineering
    Issue number6
    Publication statusPublished - 2005


    • metallocene catalysts
    • IR-72038
    • Ethylene polymerization
    • METIS-230179
    • Kinetics
    • gas phase
    • Slurry phase

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