A new microebulliometer for the measurement of the vapor-liquid equilibrium of ionic liquid systems
authors Carvalho, PJ; Khan, I; Morais, A; Granjo, JFO; Oliveira, NMC; Santos, LMNBF; Coutinho, JAP
nationality International
journal FLUID PHASE EQUILIBRIA
author keywords Vapor-liquid equilibrium; Ionic liquids; Water; Ethanol; Microebulliometer; NRTL
keywords BINARY-SYSTEMS; EXTRACTIVE DISTILLATION; HYPERBRANCHED POLYMERS; PRESSURE MEASUREMENT; ETHANOL-WATER; PLUS ETHANOL; MIXTURES; CHLORIDE; KPA
abstract 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. 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. (C) 2013 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0378-3812
year published 2013
volume 354
beginning page 156
ending page 165
digital object identifier (doi) 10.1016/j.fluid.2013.06.015
web of science category Thermodynamics; Chemistry, Physical; Engineering, Chemical
subject category Thermodynamics; Chemistry; Engineering
unique article identifier WOS:000323686700022
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journal impact factor 2.197
5 year journal impact factor 2.214
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