Pore diffusion model to predict the kinetics of heterogeneous catalytic esterification of acetic acid and methanol

作者: Mallaiah Mekala , Sunil Kumar Thamida , Venkat Reddy Goli

DOI: 10.1016/J.CES.2013.09.039

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摘要: Abstract A novel pore diffusion model in combination with a homogeneous reaction the bulk solution is proposed to kinetic behavior of conversion acetic acid during its esterification methanol using ion exchange resin catalyst. The parameters are determined based on experimental data batch reactor reactant quantities stoichiometric ratio. Experimental obtained for various ranges such as catalyst loading g/cc mixture volume, temperature range 323.15–353.15 K, average diameter particle varied from 425 μm 925 μm and RPM magnetic stirrer. multi time scale adopted updating liquid where measurement carried out. Since part catalytic slow reaction, large step used concentration or conversion, whereas small find distribution inward flux inside quasi steady state mode. This approach leads utilizing only initial kinetics predicting two constants namely k f 1 , forward rate constant 2 particle. equilibrium provides constant. predicts overall heterogeneous accurately.

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