LI Rui, CUI Xianbao, WU Tian, et al. Selection of ionic liquid solvent for liquid-liquid extraction based on COSMO-SAC model[J]. CIESC Journal, 2013, (2): 452-469.
LI Rui, CUI Xianbao, WU Tian, et al. Selection of ionic liquid solvent for liquid-liquid extraction based on COSMO-SAC model[J]. CIESC Journal, 2013, (2): 452-469.DOI: 10.3969/j.issn.0438-1157.2013.02.008.
The COSMO-SAC model is an effective method for calculation of infinite dilution activity coefficients (IDACs)
and IDACs of organic solutes or ionic liquids (ILs) can be calculated if the structures of the molecules are known.The most time consuming step in COSMO-SAC model is the generation of σ-profile via quantum mechanics.A σ-profile database including 32 anions and 191 cations were established by DMol3 in Materials Studio.A computer aided molecular design method based on COSMO-SAC and the σ-profile database was proposed to select ionic liquid solvents for the liquid-liquid extraction process.The mixture of ethanol-ethyl acetate was used to test the ionic liquid solvent selection method.Effective ionic liquid solvents were selected via such a method and some of them were verified by liquid-liquid equilibrium data of ternary system of ethanol-ethyl acetate-ionic liquid in literature
which indicated that the selection method of ionic liquid solvents was effective.