Kinetic study for the decay rate of ethylene polymerization catalyzed over silica supported TiCl4/MgCl2 catalysts

The kinetics for decay rate of ethylene polymerization catalyzed with TiCl₄/MgCI₂/Si0₂ has been investigated in the range of temperatures between 40 and 90°C and in the range of ethylene pressures between 4 and 12.4 atm. The decay of polymerization rale was fitted well by the type of first order decay. The decay rale constant caused by monomer could be expressed by k _d ^/′ = C ·[M]^−1/2. Some plausible speculations have been proposed on the deactivation mechanism caused by monomer. The activation energy for the deactivation reaction is 9.8 kcal/mole.