Gas-phase polymerization of butadiene. Data acquisition using minireactor technology and particle modeling

摘要: Minireactor technology has been used for kinetic studies on polymerization kinetics, phase equilibrium, and mass transfer a very small scale. There is nonlinear influence of temperature pressure the rate. The equilibrium can be described by Flory–Huggins approach, with temperature-dependent interaction parameter. diffusion coefficient seems to slightly dependent, dependence an Arrhenius equation. A simple formal scheme formation active sites, chain propagation, cocatalyst, deactivation sites applied. This was implemented in two different models; they are, particle model taking into account chemical no transfer. In principle, both models describe experimental results rate molecular weight distribution equally well, constants same magnitude. Molecular distributions calculated are narrower. However, gives explanation observed catalyst size. With increasing activity, differences between become more significant becomes important. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 87: 270–279, 2003