Polymerization of ethylene using a high-activity Ziegler–Natta catalyst. I. Kinetic studies |
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Authors: | Maria M V Marques Clemente Pedro Nunes Peter J T Tait Alberto Romo Dias |
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Institution: | Maria M. V. Marques,Clemente Pedro Nunes,Peter J. T. Tait,Alberto Romão Dias |
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Abstract: | Factors affecting the particular shape of kinetic rate–time profiles in the polymerization of ethylene with a MgCl2-supported TiCl4 catalyst activated by Al(C2H5)3 have been investigated. Examination of the dependence of the polymerization rate on the concentration of Al(C2H5)3 resulted in a Langmuir–Hinshelwood rate law. Analysis of the polymerization rate as a function of the polymerization temperature gave about 46 kJ mol?1 for the overall activation energy. Examination of the rapid decay of the polymerization rate with time showed that this decay is represented better by a first-order decay law than by a second-order one. © 1993 John Wiley & Sons, Inc. |
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Keywords: | polymerization Ziegler-Natta catalysis ethylene kinetic |
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