Thermodynamic and spectroscopic properties of binary mixtures of n -butylammonium butanoate ionic liquid with alcohols at T = (293.15–313.15) K

Bittencourt, Samara Storion; Hoga, Heloisa Emi; Tôrres, Ricardo Belchior; Dangelo, José Vicente Hallak

doi:10.1016/j.jct.2016.09.007

Cited by 20 publications

(9 citation statements)

References 49 publications

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“…From Figure , it can be seen that the V E curve is smoother at lower mole fraction ( x 1 < 0.4) than the other part in Figure a, while it displays silky at higher mole fraction ( x 1 > 0.5) in Figure b. The minimum V E value is reached at mole fraction x 1 about 0.4 in Figure a,b, which shows that when x 1 is about 0.5, the minimum V E value is obtained, and the minimum V E value indicates that the interaction between IL and alcohols (methanol and ethanol) is the strongest, that is, the V min E values of [C 2 2O1IM][NTF 2 ] with methanol is −0.612 cm –3 ·mol –1 at 298.15 K, which is bigger than that of [C 2 2O1IM][NTF 2 ] with ethanol, and the same tendency has been obtained for some binary mixtures in a series of works. − …”

Section: Resultsmentioning

confidence: 81%

Physical Properties and Its Estimation of Binary Mixtures of Ether-Functionalized Ionic Liquids [C₂2O1IM][NTF₂] with Alcohols

Liu

et al. 2020

J. Chem. Eng. Data

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The binary mixtures composed of 1-ethyl-3-(2methoxyethyl)-imidazolium bis(trifluoromethylsulfonyl)imide [C 2 2O1IM][NTF 2 ] and alcohols were prepared, and the density and viscosity were measured first across the entire range of mole fraction within a particular temperature range. Based on the experimental values of density, the average molar volume, the excess molar volume, and the partial molar volume were calculated, and the excess molar volume was well fitted by Redlich−Kister equation. In addition, in order to describe the excess activation Gibbs energy of viscous flow simply and directly, the relative volume of mixtures, V r , is introduced in this paper and then combined with the relative viscosity, η r , and a new find about the nondimensional Gibbs energy of activation for viscous flow of the mixture, ΔG ⧧E /RT, could be obtained.

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Section: Resultsmentioning

confidence: 81%

Physical Properties and Its Estimation of Binary Mixtures of Ether-Functionalized Ionic Liquids [C₂2O1IM][NTF₂] with Alcohols

Liu

et al. 2020

J. Chem. Eng. Data

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“…Trends of densities of the four new ILs were measured and compared with the similar type of ILs to confirm the accuracy and reproducibility of our measured data. The comparisons between the densities from this work and the literature 14,21,22 are shown in Figure 1. There are slight deviations in the final measurement results, which may be resulted from the differences in testing instruments and experiences.…”

Section: Resultsmentioning

confidence: 98%

Thermodynamic Properties and Intermolecular Interactions of a Series of N-Butylammonium Carboxylate Ionic Liquids

Wei

Zhang

et al. 2018

J. Chem. Eng. Data

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A series of new N-butylammonium carboxylate ionic liquids (N-butylammonium formate, N-butylammonium acetate, N-butylammonium propionate, and N-butylammonium butyrate) were synthesized by a one-step method and characterized. The thermodynamic properties such as surface tension, density, electrical conductivity, and dynamic viscosity of the ILs were measured as functions of temperature. Important parameters such as molecular volume, crystal energy, thermal expansion coefficient, standard molar entropy, and the surface properties are estimated by the empirical equations. The Vogel−Fulcher−Tamman (VFT) equation is used to explore the dependence of electrical conductivities and dynamic viscosities on temperature. The relationship between the molar conductivity and the fluidity of the ILs was examined through the use of Walden plots. To describe intermolecular interactions of the N-butylammonium carboxylate ILs, the optimized structures and energetics of ILs are calculated by DFT calculations. The calculated energies showed that the increase in the interaction energies between the ion clusters is the same as the trend of experimental viscosities.

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“…The result ΔH* and ΔG* were positive while the ΔS* are negative at all concentrations indicating thereby presence of specific interaction between the solute and solvents. It has been reported that positive Gibbs free energy mostly causes endothermic type of reactions [81][82][83][84][85][86][87][88][89].…”

Section: Ac Bmentioning

confidence: 99%

Volumetric behaviour of tetra-n-butyl ammonium bromide in various solvents at different temperatures

Baluja

Alnayab

2019

Rev. Colomb. Cienc. Quím. Farm.

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Measurement of ultrasonic velocity, density and viscosity of solutions of Tetra Butyl Ammonium Bromide have been carried outin different solvents (water, methanol, ethanol, 1-propanol and 1-butanol) as functions of concentration (1 to 0.1 M) at different temperatures (298.15 K to 318.15 K). Using these experimental data, various acoustical and apparent parameters such as acoustical impedance, intermolecular free length, adiabatic compressibility, molar compressibility, Van der Waals constant, relaxation strength, apparent molar isentropic compressibility, apparent molar volume have been evaluated. Further, some thermodynamic parameters such as Gibbs free energy of activation, enthalpy and entropy of activation have been evaluated. All these parameters have been evaluated to understand type of interactions present in studied solutions.

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Thermodynamic and spectroscopic properties of binary mixtures of n -butylammonium butanoate ionic liquid with alcohols at T = (293.15–313.15) K

Cited by 20 publications

References 49 publications

Physical Properties and Its Estimation of Binary Mixtures of Ether-Functionalized Ionic Liquids [C₂2O1IM][NTF₂] with Alcohols

Physical Properties and Its Estimation of Binary Mixtures of Ether-Functionalized Ionic Liquids [C₂2O1IM][NTF₂] with Alcohols

Thermodynamic Properties and Intermolecular Interactions of a Series of N-Butylammonium Carboxylate Ionic Liquids

Volumetric behaviour of tetra-n-butyl ammonium bromide in various solvents at different temperatures

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Thermodynamic and spectroscopic properties of binary mixtures of n -butylammonium butanoate ionic liquid with alcohols at T = (293.15–313.15) K

Cited by 20 publications

References 49 publications

Physical Properties and Its Estimation of Binary Mixtures of Ether-Functionalized Ionic Liquids [C22O1IM][NTF2] with Alcohols

Physical Properties and Its Estimation of Binary Mixtures of Ether-Functionalized Ionic Liquids [C22O1IM][NTF2] with Alcohols

Thermodynamic Properties and Intermolecular Interactions of a Series of N-Butylammonium Carboxylate Ionic Liquids

Volumetric behaviour of tetra-n-butyl ammonium bromide in various solvents at different temperatures

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Product

Resources

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Physical Properties and Its Estimation of Binary Mixtures of Ether-Functionalized Ionic Liquids [C₂2O1IM][NTF₂] with Alcohols

Physical Properties and Its Estimation of Binary Mixtures of Ether-Functionalized Ionic Liquids [C₂2O1IM][NTF₂] with Alcohols