Ethylene Polymerization Kinetics with a Heterogeneous Metallocene Catalyst - Comparison of Gas and Slurry Phases

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Bergstra, Michiel F. and Weickert, Günter (2005) Ethylene Polymerization Kinetics with a Heterogeneous Metallocene Catalyst - Comparison of Gas and Slurry Phases. Macromolecular Materials and Engineering, 290 (6). pp. 610-620. ISSN 1438-7492

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Abstract: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.
Item Type:Article
Copyright:© 2005 Wiley InterScience
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Link to this item:http://purl.utwente.nl/publications/72038
Official URL:http://dx.doi.org/10.1002/mame.200500085
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Metis ID: 230179