TY - JOUR
T1 - Prediction of liquid-liquid equilibrium for ternary systems containing ionic liquids with the tetrafluoroborate anion using ASOG
AU - Robles, Pedro A.
AU - Graber, Teófilo A.
AU - Aznar, Martín
N1 - Funding Information:
P.A. Robles is grateful to the National Council for Scientific and Technological Research (CONICYT-Chile) for grant 21070448 . T.A. Graber acknowledges the National Council for Scientific and Technological Research (CONICYT-Chile) , for grant FONDECYT 1085059/2008 . M. Aznar is the recipient of a fellowship from the National Council of Scientific and Technological Development (CNPq-Brazil) .
PY - 2010/9
Y1 - 2010/9
N2 - Liquid-liquid equilibrium (LLE) data for different systems involving ionic liquids are essential for design, optimization and operation of separation processes, such as recovery of valuable products and remotion of polluting agents in effluents. In this work, the ASOG model for the activity coefficient is used to predict LLE data for 32 ternary systems at 101.3 kPa and several temperatures; all the systems are formed by ionic liquids including the tetrafluoroborate anion plus alkanes, alkenes, cycloalkanes, alkanols, ketones, carboxylic acids, esters and aromatics. New group interaction parameters were determined by using a modified Simplex method, minimizing a composition-based objective function. The results, in terms of mean deviation between the experimental and calculated compositions, are satisfactory, with rms deviations of about 4%.
AB - Liquid-liquid equilibrium (LLE) data for different systems involving ionic liquids are essential for design, optimization and operation of separation processes, such as recovery of valuable products and remotion of polluting agents in effluents. In this work, the ASOG model for the activity coefficient is used to predict LLE data for 32 ternary systems at 101.3 kPa and several temperatures; all the systems are formed by ionic liquids including the tetrafluoroborate anion plus alkanes, alkenes, cycloalkanes, alkanols, ketones, carboxylic acids, esters and aromatics. New group interaction parameters were determined by using a modified Simplex method, minimizing a composition-based objective function. The results, in terms of mean deviation between the experimental and calculated compositions, are satisfactory, with rms deviations of about 4%.
KW - ASOG
KW - Ionic liquids
KW - Liquid-liquid equilibrium
KW - Prediction
UR - http://www.scopus.com/inward/record.url?scp=77955094630&partnerID=8YFLogxK
U2 - 10.1016/j.fluid.2010.03.018
DO - 10.1016/j.fluid.2010.03.018
M3 - Article
AN - SCOPUS:77955094630
SN - 0378-3812
VL - 296
SP - 154
EP - 158
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
IS - 2
ER -