Liquid-liquid equilibria for the systems ethylene carbonate plus ethylene glycol plus glycerol; ethylene carbonate plus glycerol carbonate plus glycerol and ethylene carbonate plus ethylene glycol plus glycerol carbonate plus glycerol at catalytic reacting temperatures

摘要

The measurements of the liquid-liquid equilibria implied in the reaction system to yield glycerol carbonate from ethylene carbonate and glycerol were performed. First, data for the ternary systems consisting of ethylene carbonate + ethylene glycol + glycerol as well as ethylene carbonate + glycerol carbonate + glycerol at 313.2, 318.2 and 323.2 K and atmospheric pressure were acquired. Furthermore, the quaternary equilibrium involving both products of the reaction, i.e., ethylene carbonate + ethylene glycol + glycerol carbonate + glycerol, was evaluated under the same conditions. All the data experimental data were correlated with the NRTL model with root-mean square deviations of about 0.03 for all the systems tested. (C) 2014 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.