A new microebulliometer for the measurement of the vapor-liquid equilibrium of ionic liquid systems

作者：Carvalho Pedro J; Khan Imran; Morais Antonio; Granjo Jose F O; Oliveira Nuno M C; Santos Luis M N B F; Coutinho Joao A P^*

来源：Fluid Phase Equilibria, 2013, 354: 156-165.

DOI：10.1016/j.fluid.2013.06.015

• Vapor-liquid equilibrium
• Ionic liquids
• Water
• Ethanol
• Microebulliometer
• NRTL

Over the last decade ionic liquids appeared as potential entrainers for extractive distillation processes. However experimental vapor-liquid equilibrium data for ionic liquid containing systems is still scarce since most conventional equilibrium cells are not adequate for these systems. To overcome that limitation a new isobaric microebulliometer, operating at pressures ranging from 0.05 to 0.1 MPa and requiring a sample volume lower than 8 mL was developed and validated in this work. %26lt;br%26gt;The new apparatus was used to determine isobaric VLE data at pressures of 0.05, 0.07 and 0.1 MPa for eight binary mixtures of 1-ethyl-3-methylimidazolium chloride ([C(2)mim][Cl]), 1-butyl-3-methylimidazolium chloride ([C(4)mim][Cl]), 1-hexyl-3-methylimidazolium chloride ([C(6)mim][Cl]), and choline chloride ([N-111(2OH)[Cl]) with water and ethanol. The experimental data here measured were correlated with the NRTL model.

• 出版日期2013-9-25