Influence of Metallocene Type on the Order of Ethylene Polymerization and Catalyst Deactivation Rate in a Solution Reactor |
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| Authors: | Saeid Mehdiabadi João BP Soares |
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| Institution: | Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1 |
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| Abstract: | The solution polymerization of ethylene using rac-Et(Ind)2ZrCl2/MAO and (Dimethylsilyl(tert-butylamido)(tetramethyl- cyclopentadienyl)titanium Dichloride)(CGC-Ti)/MAO was studied in a semi-batch reactor at 120 °C under different monomer pressures and catalyst concentrations. The kinetics of ethylene polymerization with rac-Et(Ind)2ZrCl2/MAO can be described with first order reactions for polymerization and catalyst deactivation. When (CGC-Ti)/MAO is used, however, second order kinetics are observed for catalyst decay and the order of polymerization changes from 2 to 1 with increasing ethylene pressure. |
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| Keywords: | metallocene catalysts polyethylene polymerization kinetics solution polymerization polymerization reaction engineering |
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