Thermodynamic Properties of Ternary Mixtures Containing Ionic Liquid and Organic Liquids: Excess Molar Volume and Excess Isentropic Compressibility

Sharma, V.K.; Solanki, S.; Bhagour, S.

doi:10.1021/je4004965

Cited by 25 publications

(14 citation statements)

References 57 publications

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“…The experimentally determined excess molar volumes were correlated using Redlich–Kister correlation − as given by eq . The parameters have been fitted using the minimization of standard deviation approach …”

Section: Resultsmentioning

confidence: 99%

Thermophysical Studies of Dibenzyltoluene and Its Partially and Fully Hydrogenated Derivatives

et al. 2018

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Liquid organic hydrogen carriers (LOHC) are an interesting and promising option for the storage and transport of hydrogen with reasonable energy density via a reversible hydrogenation reaction. The commercially available heat transfer oil dibenzyltoluene emerged as a potential carrier for the LOHC technology due to its availability, thermal stability, and reasonable hydrogen storage capacity. In this work, thermophysical property data (viscosity, density, surface tension, and refractive index) are measured for dibenzyltoluene and its partially and fully hydrogenated derivatives, namely, hexahydro-dibenzyltoluene, dodecahydro-dibenzyltoluene, and octadecahydro-dibenzyltoluene over a wide range of temperatures. Correlations for the temperature dependence are proposed for the measured properties. Moreover, the excess molar volume is reported within the temperature range from 293.15 K to 358.15 K for the binary mixtures of dibenzyltoluene (fully dehydrogenated form) and octadecahydro-dibenzyltoluene (fully hydrogenated form). Positive values for the excess molar volumes are observed over the entire concentration range.

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Section: Resultsmentioning

confidence: 99%

Thermophysical Studies of Dibenzyltoluene and Its Partially and Fully Hydrogenated Derivatives

et al. 2018

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“…The relative permittivity ε r is the crucial parameter in the molecular solvent system and it usually can be used to measure the polarity of molecular solvents. In this work, the values of refractive index, n D , molar volume, V m , and Δ l g H m o (298) were collected from the literature, − and according to eqs – δ μ of some molecular solvents were obtained. These are listed in Table , and the corresponding relative permittivity ε r for these molecular solvents were collected − and also listed in Table .…”

Section: Resultsmentioning

confidence: 99%

Determination and Prediction for the Polarity of Ionic Liquids

Guan¹,

Chang²,

Yang³

et al. 2017

J. Chem. Eng. Data

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Ionic liquids (ILs) have attracted remarkable attention as a new class of novel reaction medium and soft functional materials in the framework of Green Chemistry, and the polarity of ionic liquids is one of the primary concerns in the scientific community. Here, we introduce a new and simple scale of polarity, δ μ , for ILs. Initially, two kinds of representative ionic liquids, {1-alkyl-3-methyllimidazolium acetate}) are prepared and confirmed by 1 H NMR spectroscopy and 13 C NMR spectroscopy, respectively. Furthermore, a spectroscopic method based on solvatochromic probes is used to obtain the polarity of room temperature ILs (RTILs). In this work we mainly introduce that the scale of solvent polarity, E T (30) values, is determined by means of Reichardt's dye (30), and π* values are determined by N,N-diethyl-4-nitroaniline. Simultaneously, in terms of the values of enthalpy of vaporization, δ μ values of these ILs are predicted. Moreover, the trend of δ μ values of the ionic liquids with the different alkyl chains are the same as the E T (30) and π* values. In addition, the new scale of polarities δ μ of some molecular liquids are also predicted, and the results are in good agreement with relative permittivity, ε r .

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“…The pure components specifications are given in Table . The experimental values of density, speed of sound, and thermal expansion coefficient of the pure components were tabulated in Table ; they were also compared with the available literature data. ,− ,− …”

Section: Methodsmentioning

confidence: 99%

Density and Speed of Sound of Binary Mixtures of Ionic Liquid 1-Ethyl-3-methylimidazolium Tetrafluoroborate,N,N-Dimethylformamide, andN,N-Dimethylacetamide at Temperature Range of 293.15–343.15 K: Measurement and PC-SAFT Modeling

Zarei

Keley

2017

J. Chem. Eng. Data

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Density, ρ, and speed of sound, u, were measured for two binary mixtures, 1-ethyl-3-methylimidazolium tetrafluoroborate (1) + N,N-dimethylformamide (2) and 1-ethyl-3-methylimidazolium tetrafluoroborate (1) + N,N-dimethylacetamide (2), over the entire range of compositions at T = 293.15–343.15 K in 5 K intervals using an Anton Paar density and sound velocity analyzer (DSA 5000). Also excess molar volume, V m E, isentropic compressibility, k s, and isentropic compressibility deviation, Δk s, were calculated. For these two binary mixtures, the V m E values were negative in x 1 = 0.1–0.8, they were positive in x 1 ≥ 0.8, and they became more negative with increase in the temperature from 293.15 to 343.15 K. For both systems, the most negative V m E values were observed in the region of x 1 = 0.5. The V m E values were fitted to the Redlich–Kister polynomial equation. The perturbed chain statistical associating fluid theory (PC-SAFT) was also employed in order to correlate the densities of the binary mixtures at the temperature range of 293.15–343.15 K. The results obtained were in good agreement with the experimental data.

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Thermodynamic Properties of Ternary Mixtures Containing Ionic Liquid and Organic Liquids: Excess Molar Volume and Excess Isentropic Compressibility

Cited by 25 publications

References 57 publications

Thermophysical Studies of Dibenzyltoluene and Its Partially and Fully Hydrogenated Derivatives

Thermophysical Studies of Dibenzyltoluene and Its Partially and Fully Hydrogenated Derivatives

Determination and Prediction for the Polarity of Ionic Liquids

Density and Speed of Sound of Binary Mixtures of Ionic Liquid 1-Ethyl-3-methylimidazolium Tetrafluoroborate,N,N-Dimethylformamide, andN,N-Dimethylacetamide at Temperature Range of 293.15–343.15 K: Measurement and PC-SAFT Modeling

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