Ionic liquid structural effects on solute partitioning in biphasic ionic liquid and supercritical carbon dioxide systems

Equation of state modelling of systems with ionic liquids: Literature review and application with the Cubic Plus Association (CPA) model

“…They obtained a maximum deviation of 2%. In another study, they used the same EoS to correlate the infinite dilution partition coefficients of three types of solutes in six types of ionic liquids [90], with pure compound parameters determined in the same way as before [89]. Next, the same group introduced a modified version of the Sanchez-Lacombe EoS [91], where the interaction energy term was modified to take into account the temperature dependence of hydrogen bonding and ionic interactions.…”

Partitioning of organics between ionic liquids and supercritical CO2: Limiting K-factors in [bmim][N(CN)2]–scCO2 system and generalized correlation with cation- and anion-specific LSERs

“…However, useful information can also be obtained from infinite-dilution partition coefficient (K-factor) of the organic component (=solute) between the two phases in the IL-CO 2 binary system. Supercritical fluid chromatography (SFC) with the IL as the stationary liquid and scCO 2 as the carrier fluid provides a convenient source of limiting K-factors of organic solutes, and SFC has been employed for this purpose in both the open tubular capillary column [31][32][33][34][35][36][37] and the packed column [38][39][40][41] formats. Hiraga et al [40,41] developed a generalized model to correlate/predict the limiting K-factors of organic solutes in the IL-CO 2 systems, and the model proved to be useful in correlating the experimental data in multiple IL-CO 2 systems in a wide range of temperature and pressure [40][41][42].…”

Extension of an Associated Lattice–Fluid Equation of State to CO2 + Ionic Liquid Systems

“…Therefore, activity coefficient models have limited predictive capabilities and, furthermore, these models are incapable of providing volumetric data. Some of the more successful models for correlating phase equilibria in CO 2 + IL systems include the truncated perturbed chain–polar statistical associating fluid theory (tPC-PSAFT) of Karakastani et al., , the soft-SAFT model of Andreu and Vega, , and the Sanchez and Lacombe (SL) EOS extensions of Tome et al and Machida et al Although successful in correlating data, all these models incorporate temperature or molecular weight-dependent binary interaction parameters.…”