6533b834fe1ef96bd129de97

RESEARCH PRODUCT

Separation of the azeotropic mixture 2-propanol + water employing different imidazolium ionic liquids as solvents

Amparo CháferHelena PoyMa Pilar CumplidoJavier De La Torre

subject

UNIQUACAtmospheric pressureChemistry02 engineering and technology010402 general chemistry01 natural sciencesAtomic and Molecular Physics and Optics0104 chemical sciencesPropanolPartition coefficientchemistry.chemical_compound020401 chemical engineeringIonic liquidNon-random two-liquid modelPhysical chemistryGeneral Materials Science0204 chemical engineeringPhysical and Theoretical ChemistrySelectivityTernary operation

description

Abstract The liquid-liquid equilibria of the ternary systems water (1) + 2-propanol (2) + [emim][Tf2N] (3) and water (1) + 2-propanol (2) + [hmim][Tf2N] (3) at 283.2, 303.2 and 323.2 K and atmospheric pressure were investigated, in order to achieve a better knowledge of the ternary mixture behaviour. The capability of [emim][Tf2N] and [hmim][Tf2N] as solvents in the separation of the azeotropic mixture water + 2-propanol was studied through the distribution coefficient and selectivity, and compared with the results obtained with other ionic liquids in the same azeotropic mixture studied before by our research group. The thermodynamic parameters of both ternary mixtures were calculated by the non-random two-liquid (NRTL) and universal quasichemical (UNIQUAC) models.

yearjournalcountryeditionlanguage
2020-01-01The Journal of Chemical Thermodynamics
https://doi.org/10.1016/j.jct.2019.105889