Excess properties for binary systems ionic liquid+ethanol: Experimental results and theoretical description using the ERAS model

Garcı́a-Miaja, Gonzalo; Troncoso, Jacobo; Romanı́, Luis

doi:10.1016/j.fluid.2008.09.004

Cited by 165 publications

(166 citation statements)

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“…Such behavior can be explained by hydrogen bonding and dipole-dipole interactions being T-independent. Finally, the negative and positive extrema of excess volume are unusual and similar results are obtained [44,45].…”

Section: Excess Propertiessupporting

confidence: 79%

Volumetric and transport properties of N-Butyl-N-methylpyrrolidinium bis(Trifluoromethanesulfonyl)imide–methanol binary mixtures

Zarrougui

Dhahbi

Lemordant

2011

Ionics

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Densities, viscosities, and ionic conductivities were measured for the binary mixtures containing the ionic liquid Nbutyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl) imide and methanol over the entire range of compositions at the temperature varying from 253.15 to 318.15 K. The densities and viscosities decrease monotonously with temperature and the content of ionic liquids (ILs). Furthermore, excess isobaric expansion coefficient has been calculated from the experimental densities. The dependence of temperature on the viscosity has been fitted to the Arrhenius law with high precision. The dependence of temperature on the ionic conductivity has also been gauged by both of the Arrhenius and Vogel-Tamman-Fulcher (VTF) equations. In fact, the shape of the curves shows that the temperature dependence of the conductivity does not follow a simple Arrhenius law, but a better fitting of experimental results is achieved using the VTF model. Additionally, the effects of ILs concentration on the viscosity and the conductivity have been examined using the Walden rule, which shows that the variation of conductivity is inversely proportional to viscosity. Excess molar volumes and viscosity deviations for all mixtures are evaluated and well fitted to the Redlich-Kister polynomial expansions. Physicochemical properties show two clearly distinguished behaviors corresponding to ILsrich and methanol-rich regions, with distinct transport and volumetric properties. The obtained results are discussed in terms of dipolar interactions and hydrogen bonding establishment between ions of ILs and the methanol molecules.

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Section: Excess Propertiessupporting

confidence: 79%

Volumetric and transport properties of N-Butyl-N-methylpyrrolidinium bis(Trifluoromethanesulfonyl)imide–methanol binary mixtures

Zarrougui

Dhahbi

Lemordant

2011

Ionics

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“…Densities of water [17] and ethanol [14] for applying equation (1) heat capacities, being higher than those of Zábranský et al [18] and Anouti et al [20] and lower than those of García-Miaja et al [19] and Vega-Maza et al [22]. The deviations from the values calculated through the polynomial of Zábranský et al [18], which are likely the best ones, range from 0.2% at the higher temperature to 0.4% at the lower one.…”

Section: Equipmentmentioning

confidence: 99%

“…From this comparison, it can be concluded that the equipment has a good performance. [18] () García-Miaja et al [19]; (▼) Anouti et al [20]; () Tripathi [21]; () Vega-Maza et al …”

Section: Equipmentmentioning

confidence: 99%

Molar heat capacities of the mixture {1,8-cineole + ethanol} at several temperatures and atmospheric pressure

Martínez-López

Schneider

Salavera

et al. 2016

The Journal of Chemical Thermodynamics

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ABSTRACT.Molar heat capacities at atmospheric pressure have been determined every 5 K for the mixture {1,8-cineole (1) + ethanol (2)} in the temperature interval (304.7 to 324.5) K and the whole composition range with a Calvet type calorimeter Setaram C80. From the molar heat capacities, excess molar heat capacities have been calculated, their values being positive and increasing as the temperature rises. The solvation model COSMO-RS has been applied to predict the excess molar heat capacities.The model overestimates the values of the excess heat capacities but predicts well the trend of variation of the excess molar heat capacity with the temperature.

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“…( ) Table 7 shows the coefficients of regression for equation (7) Figure 6 shows the variation of heat capacity with temperature, together with the results obtained by various research groups (Rebelo et al, 2004;Kim et al, 2004;Fredlake et al, 2004;Waliszewski et al, 2005;Van Valkenburg et al, 2005;Garcia-Miaja et al, 2008& 2009. All these data were obtained with DSC.…”

Section: Heat Capacity Of Ionic Liquids and Ionanofluidsmentioning

confidence: 99%

“…Figure 7 shows the variation of heat capacity with temperature together with the results obtained from various research groups (Holbrey et al, 2003;Kabo et al, 2004;Fredlake et Table 7. Coefficients of equation (7) Fig . -Rebelo et al, 2004;-Kim et al, 2004;-Fredlake et al, 2004;-Waliszewski et al, 2005;-Van Valkenburg et al, 2005;-Garcia-Miaja et al, 2008;-Garcia-Miaja et al, 2009) -Holbrey et al, 2003;-Kabo et al, 2004;-Fredlake et al, 2004;-Troncoso et al, 2006) 2004; Troncoso et al, 2006). With the exception of the data reported by Kabo and co-workers (Kabo et al, 2004) which were obtained using a heat bridge calorimeter, all the remaining data were obtained using DSC.…”

Section: Heat Capacity Of Ionic Liquids and Ionanofluidsmentioning

confidence: 99%

Thermal Properties of Ionic Liquids and Ionanofluids

Ribeiro¹,

Vieira²,

França³

et al. 2011

Ionic Liquids: Theory, Properties, New Approaches

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Excess properties for binary systems ionic liquid+ethanol: Experimental results and theoretical description using the ERAS model

Cited by 165 publications

References 50 publications

Volumetric and transport properties of N-Butyl-N-methylpyrrolidinium bis(Trifluoromethanesulfonyl)imide–methanol binary mixtures

Volumetric and transport properties of N-Butyl-N-methylpyrrolidinium bis(Trifluoromethanesulfonyl)imide–methanol binary mixtures

Molar heat capacities of the mixture {1,8-cineole + ethanol} at several temperatures and atmospheric pressure

Thermal Properties of Ionic Liquids and Ionanofluids

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