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Zhu Y.,Laboratory Of Min Of Educ And Xinjiang Uigur Autonomous Region In Fine Chemical Engineering Of Oil And Natural Gas | Li H.,Laboratory Of Min Of Educ And Xinjiang Uigur Autonomous Region In Fine Chemical Engineering Of Oil And Natural Gas | Hu Z.,Laboratory Of Min Of Educ And Xinjiang Uigur Autonomous Region In Fine Chemical Engineering Of Oil And Natural Gas | Wang J.,Laboratory Of Min Of Educ And Xinjiang Uigur Autonomous Region In Fine Chemical Engineering Of Oil And Natural Gas | Gao X.,Laboratory Of Min Of Educ And Xinjiang Uigur Autonomous Region In Fine Chemical Engineering Of Oil And Natural Gas
Huaxue Fanying Gongcheng Yu Gongyi/Chemical Reaction Engineering and Technology | Year: 2012

An oil-soluble drag reduction agent (DRA) was synthesized from α-dodecene monomers with solution polymerization on supported TiCl4/MgCl2 catalyst. Rheology study was carried out with Brookfield DV III rheometer to measure the polymerization rates in n-hexane, n-heptane and cyclohexane solvents. Kinetic parameters such as reaction order on concentration of main catalyst TiCl4/MgCl2 and concentration of co-catalyst Al(i-Bu)3 as well as reaction apparent activation energy were determined from initial polymerization rate, and the polymerization rate expression was then derived. The effect of chain growth rate on polymer intrinsic viscosity was also discussed. The results show that the polymerization rate is the first order to the concentration of the monomer and main catalyst, and zero order to the concentration of co-catalyst The polymerization rate decreases successively in n-hexane, n-heptane and cyclohexane solvents. The relationship between the polymerization rate and polymer intrinsic viscosity is non-linear. Polymerization rate should lie in a specific range to obtain the polymer with a higher intrinsic viscosity. The polymerization apparent activation energy is 56.64 kJ/mol at -5-5°C. Source

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