Interaction of 1-Butyl-3-methylimidazolium Trifluoromethanesulfonate with Ethyl Acetate/1-Butanol: Thermophysical Properties

Abstract

Densities, speeds of sound and viscosities of pure and the binary mixtures of [BMIM][CF 3 SO 3 ] ? ethyl acetate or 1-butanol have been measured over the entire range of mole fractions at T = (298.15-323.15) K and at 0.1 MPa pressure using an Anton Paar density and sound velocity meter DSA 5000M and a Lovis microviscometer 2000M. The excess molar volumes (V E ), viscosity deviations (Dg) and the isentropic compressibility deviations (Dj S ) have been calculated using the experimental data. The variations in V E , Dg and Dj S with changes in mole fraction and temperature have been interpreted in terms of ion-dipole interactions and structural effects on mixing of IL and solvents. The RedlichKister equation has been fitted to the V E , Dg and Dj S values using a multi-parametric nonlinear regression method. The PFP theory has been applied to correlate the excess molar volumes. The experimental and PFP correlated values of V E are found to be quite close to each other.

Thermophysical Properties of 1-Butyl-3-methylimidazolium Trifluoromethanesulfonate in a Wide Range of Temperatures and Pressures

“…with results in this work gave us a Δρ/ρ = ±0.168% APD, and they are higher, with a maximum Δρ/ρ = 0.174% deviation at T = 298.15 K. Another six experimental values of Tsamba et al have a Δρ/ρ = ±0.218% APD, and they are smaller than this work, with an MPD of Δρ/ρ = −0.245% at T = 297.98 K. The six experimental density values of Montalbán et al have a Δρ/ρ = ± 0.4% APD and are lower than present results. The one density value of Andanson et al has a Δρ/ρ = 0.02% deviation at T = 298.15 K. The six density values of Anwar and Riyazuddeen showed good APD with values of this work in Δρ/ρ = ± 0.026%.…”

“…Information about literature density ρ (kg·m –3 ) investigations of [BMIM]­[TFO] at ambient pressure ρ­( p 0 , T ) and its ( p ,ρ, T ) data − is presented in Table : Fredlake et al investigated the density and heat capacity of [BMIM]­[TFO] at temperature T = (295.75 to 342.95) K and ambient pressures using 1 mL pycnometers from Thomas Scientific. Tokuda et al , studied the density of [BMIM]­[TFO] at temperature T = (288.15 to 313.15) K and at atmospheric pressure using the thermoregulated density/specific gravity meter DA-100.…”

“…Seoane et al, Gonzalez et al, and Anwar and Riyazuddeen presented the densities of [BMIM]­[TFO] at ambient pressure using an Anton-Paar DSA 5000M density and sound velocity meter at T = (293.15 to 343.15), T = (293.15 to 323.15), and T = (298.15 to 323.15) K, respectively.…”

“…Analysis of the literature reveals − the necessity for careful experimental investigations of the high pressure-high temperature densities of [BMIM]­[TFO] and analysis of derived properties because there are no density values above 60 MPa, there are no density values above T = 393.15 K at high pressures, and there are no thermophysical properties at high state parameters. …”

Viscosity and Density of Two 1-Alkyl-3-methyl-imidazolium Triflate Ionic Liquids at High Pressures: Experimental Measurements and the Effect of Alkyl Chain Length

“…We note that this limit may be considered not too high, taking into account the difficulties usually associated with the measurement of the viscosity of ionic liquids. 9,12 In particular, it is to be marked that the results obtained by Tokuda et al, 33 Yadav et al, 34 Anwar et al, 35 Fatima et al, 36 and Mbondo Tsamba et al 37 deviate less than about ±3%, which is commensurate with the uncertainty of the present measurements.…”