This document summarizes a study on using reactive distillation to produce ethyl acetate through the esterification reaction of acetic acid and ethanol. The researchers used the RADFRAC module in Aspen Plus to simulate a 13-stage reactive distillation column. They compared the predictions of various activity models for the non-ideal liquid phase behavior and found that no single model accurately predicted compositions along the entire column. However, a hybrid approach using different activity models for the upper and lower sections of the column improved the accuracy of simulations compared to experimental data.