Kinetic study on liquid propylene polymerization using a modified heat flow reaction calorimeter

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EMAMI MEHRSA; Hormozi Farzin; ABEDINI HOSSEIN

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Journal Paper

Paper Information

Journal: POLYOLEFINS JOURNALS Year:2021 | Volume:8 | Issue:2 Page(s): 123-133

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Title

Kinetic study on liquid propylene polymerization using a modified heat flow reaction calorimeter

Author(s)

EMAMI MEHRSA | Hormozi Farzin | ABEDINI HOSSEIN | Issue Writer Certificate

Keywords

Kinetic study

calorimetry

liquid monomer

propylene

polymerization

Abstract

Bulk phase polymerization of propylene with a 4th generation of Ziegler-Natta catalyst was kinetically investigated by means of heat flow calorimetry. The assumptions and modifications on isothermal calorimetric method were demonstrated. Our calibration method showed that heat exchange with the reactor cover plate is not constant over time. Therefore, the dynamic of cover plate temperature was considered in the calorimetric method. The polymerization rate profiles depending on hydrogen and external electron donor concentration have been investigated. Normalized polymerization profiles (Rp/Rpmax) are plotted and expressed as an exponential function of time. Effects of hydrogen and external electron donor (ED) concentration on Rpmax and polymerization rate were investigated as well. The results showed that by increasing hydrogen concentration, initial polymerization rate (Rpmax) increased. Hydrogen increased productivity by increasing the initial polymerization rate, while it had no negative effect on the rates of decay or its effect was small. The ED concentration was optimized so that the catalyst deactivation rate was at its lowest level. Also, changes in the ratio of activation to inactivation with ED concentration were examined, and a proportional change was observed

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APA: Copy

EMAMI, MEHRSA, Hormozi, Farzin, & ABEDINI, HOSSEIN. (2021). Kinetic study on liquid propylene polymerization using a modified heat flow reaction calorimeter. POLYOLEFINS JOURNALS, 8(2), 123-133. SID. https://sid.ir/paper/1033027/en

Vancouver: Copy

EMAMI MEHRSA, Hormozi Farzin, ABEDINI HOSSEIN. Kinetic study on liquid propylene polymerization using a modified heat flow reaction calorimeter. POLYOLEFINS JOURNALS[Internet]. 2021;8(2):123-133. Available from: https://sid.ir/paper/1033027/en

IEEE: Copy

MEHRSA EMAMI, Farzin Hormozi, and HOSSEIN ABEDINI, “Kinetic study on liquid propylene polymerization using a modified heat flow reaction calorimeter,” POLYOLEFINS JOURNALS, vol. 8, no. 2, pp. 123–133, 2021, [Online]. Available: https://sid.ir/paper/1033027/en

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