Effect of temperature on molecular interaction of ethyl acetate with ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate

Abstract

The speeds of sound, u and densities, ρ, of the pure and their mixtures of Imadazolium based Ionioc liquid having cation 1-butyl-3-methylimidazolium ([BMIM]+) with the anion hexaflurophospate [PF6]− with Ethyl acetate (EtOAc) have been determined from 0 to 1 mol fraction range of ILs with interval 0.1 at (298.15–323.15) K at pressure 0.1 MPa. We used the measured data to assess the excess molar volumes, VmE., excess isentropic compressibility, κsE, excess speeds of sound, uE, excess molar isentropic compressibility, Ks,mE, excess isobaric thermal expansion, αpE, were calculated and fitted with Redlich-Kister polynomial equation. The excess partial molar volumes, V¯m,1E and V¯m,2E and excess partial molar isentropic compressibilities, K¯s,m,1E and K¯s,m,2E, excess partial molar volumes, V¯m,1oE and V¯m,2oE and excess partial molar isentropic compressibilities, K¯s,m,1oE and K¯s,m,2oE of the components at infinite dilution also been measured. The departure of measured properties has been explored in terms of intermolecular interactions.Simultaneously, the FTIR studies exhibited qualitative analysis of ion-pair formation, interactions of ion–dipole and hydrogen bonding between IL with the EtOAc.