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KINETIC STUDY FOR THE DECAY RATE OF ETHYLENE POLYMERIZATION CATALYZED OVER SILICA SUPPORTED TiCL4/MgCl2 CATALYSTS
Korean Journal of Chemical Engineering, April 1990, 7(2), 95-99(5), 10.1007/BF02705053
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Abstract
The kinetics for decay rate of ethylene polymerization catalyzed with TiCl4/MgCl2/SiO2 has been investigated in the range of temperatures between 40 and 90℃and in the range of ethylene pressures between 4 and 12.4 atm. The decay of polymerization rate was fitted well by the type of first order decay. The decay rate constant caused by monomer could be expressed by k’d = C ·[M]-1/2. Some plausible speculation have been proposed on the deactivation mechanism caused by monomer. The activation energy for the deactivation reaction is 9.8kcal/mole.
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Chien JCW, Kuo CI, J. Polym. Sci. A: Polym. Chem., 23, 761 (1985)
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Kashiwa N, Yoshitake J, Polym. Bull., 12, 99 (1984)
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