In this study, we have synthesized the
protic ionic liquid 2-hydroxy ethylammonium lactate
(2-HEAL), and investigated its volumetric and acoustic behaviour into
different hydroxylic media (water, methanol and ethanol) at the temperature
288.15-323.15 K and atmospheric pressure. Total solubility of the ionic liquid
into these solvents was observed at this range of temperature. Apparent molar volume and apparent molar isentropic
compressibility values have been computed from the experimental data and fitted
to a temperature dependent Redlich-Mayer equation. From these
correlations, the limiting infinite dilution values of the apparent magnitudes
have also been computed. Derived magnitudes such as isobaric expansibility and
isothermal coefficient of pressure excess molar enthalpy were computed due to
their importance in the study of specific molecular interactions among the ions
and covalent molecules enclosed into mixtures. The measured experimental data
were used to test the accuracy of prediction of different models
(Mchaweh-Nasrifar–Moshfeghian model (MNM model) and the modified Heller
temperature dependent equation (MHE) for density and Collision Factor Theory
(CFT) for ultrasonic velocity). The obtained results
indicate that ionic liquid interactions in water are weaker than in the
studied alcoholic solutions, as previously observed in analogous protic ionic
liquids.
Primary Language | English |
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Subjects | Engineering |
Journal Section | Regular Original Research Article |
Authors | |
Publication Date | May 30, 2018 |
Published in Issue | Year 2018 |