Improved conversion to methyl acetate through water removal of esterification by pervaporation using crosslinked PVA membrane by silica nanoparticles
Paper ID : 1346-MST2015-FULL
Behzad Torabi, Elham Ameri *, sajjad moradian
Islamic Azad University, Shahreza Branch
In this work, a crosslinked poly (vinyl alcohol) nanocomposite membrane was prepared using the silica nanoparticles concentration of 20 wt% and fumaric acid as the crosslinking agent. The main objective of this study is to estimate the permeability of water in the nanocomposite membrane during the esterification of methanol with acetic acid. The reaction was conducted in a batch reactor, using Amberlyst 15 as a heterogeneous catalyst with the extent of 15 wt% relative to acetic acid. Experiments were carried out at 4:1 for alcohol/acid molar ratio and at temperature of 70 °C. It was established that the coupled process was significantly capable of improving the conversion of reversible esterification reaction. Moreover, compared to around 47% conversion in esterification reaction coupled with the membrane without nanoparticles, up to 94% conversion to methyl acetate was attained when pervaporation using the nanocomposite membrane, at the same experimental conditions.
Methyle acetate, Esterification, Dehydration, PVA membrane, Silica
Status : Paper Accepted (Poster Presentation)