TY - JOUR
T1 - Separation of azeotropic mixtures using protic ionic liquids as extraction solvents
AU - Sosa, Julio E.
AU - Araújo, João M. M.
AU - Amado-González, Eliseo
AU - Pereiro, Ana B.
N1 - IF/00190/2014;
IF/00210/2014;
PTDC/EQU-EQU/29737/2017;
PTDC/QEQ-FTT/3289/2014;
IF/00210/2014/CP1244/CT0003;
UID/QUI/50006/2019;
POCI-01-0145-FEDER-007265;
University of Pamplona, Internal Project 2-2017.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - The aim of this work is to evaluate the separation of hydrocarbons (hexane and heptane) from their azeotropic mixtures with ethanol using protic ionic liquid (PIL) as extraction solvents. With this goal in mind, PILs were synthesized and their thermal and physical characterization were carried out. Experimental determination of the phase equilibrium for the ternary systems hydrocarbons + ethanol + PIL at 298.15 K and 101.2 kPa were also carried out in order to evaluate the feasibility of this application. The solute distribution ratio and the selectivity were also determined to compare the solvent capacity of these PILs. The NRTL equation was used to correlate the experimental data. Furthermore, this paper provides a comparison of the solvent capacity of these PILs with different extraction solvents (ionic liquids (ILs), ILs mixtures and deep eutectic solvents) available in the literature. Then, a critical review for the separation of these azeotropic mixtures was carried out using the extraction processes data obtained through the simulation using a conventional software.
AB - The aim of this work is to evaluate the separation of hydrocarbons (hexane and heptane) from their azeotropic mixtures with ethanol using protic ionic liquid (PIL) as extraction solvents. With this goal in mind, PILs were synthesized and their thermal and physical characterization were carried out. Experimental determination of the phase equilibrium for the ternary systems hydrocarbons + ethanol + PIL at 298.15 K and 101.2 kPa were also carried out in order to evaluate the feasibility of this application. The solute distribution ratio and the selectivity were also determined to compare the solvent capacity of these PILs. The NRTL equation was used to correlate the experimental data. Furthermore, this paper provides a comparison of the solvent capacity of these PILs with different extraction solvents (ionic liquids (ILs), ILs mixtures and deep eutectic solvents) available in the literature. Then, a critical review for the separation of these azeotropic mixtures was carried out using the extraction processes data obtained through the simulation using a conventional software.
KW - Azeotropic mixtures
KW - Extraction processes
KW - Liquid-liquid equilibria
KW - Protic ionic liquids
UR - http://www.scopus.com/inward/record.url?scp=85075398992&partnerID=8YFLogxK
U2 - 10.1016/j.molliq.2019.111733
DO - 10.1016/j.molliq.2019.111733
M3 - Article
AN - SCOPUS:85075398992
SN - 0167-7322
VL - 297
JO - Journal of Molecular Liquids
JF - Journal of Molecular Liquids
M1 - 111733
ER -