Propene bulk polymerization kinetics: Role of prepolymerization and hydrogen


Pater, Jochem T.M. and Weickert, Günter and Swaaij, Wim P.M. van (2003) Propene bulk polymerization kinetics: Role of prepolymerization and hydrogen. AIChE Journal, 49 (1). pp. 180-193. ISSN 0001-1541

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Abstract:An experimental setup for the polymerization of liquid propylene was used to carry out main polymerizations with and without a prepolymerization step. Two types of prepolymerization are introduced: at a constant temperature and at rapidly increasing reactor temperatures. With the present catalyst system, at high polymerization temperatures, a prepolymerization step will increase polymerization rate. Hydrogen was used to control the molecular weight of the product. The polymerization reactor was used in combination with a gas chromatograph to determine the vapor-liquid equilibrium (VLE) of the propylene-hydrogen system. Measurements are compared to predictions of different equations of state. The Peng-Robinson equation of state is best able to describe the VLE for this binary system. A temperature-dependent interaction parameter was derived from the fits to the measured data.
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Copyright:© 2003 American Institute of Chemical Engineers (AIChE)
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