Experimental and theoretical excess molar properties of imidazolium based ionic liquids with isomers of butanol

Vaid, Zuber S.; More, Utkarsh U.; Oswal, S.L.; Malek, Naved I.

doi:10.1016/j.tca.2016.03.026

Cited by 33 publications

(29 citation statements)

References 62 publications

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“…Over time, however, it has emerged that the use of the Flory formalism can still provide an interesting correlation between the excess volumes of more complex mixtures. So far, the PFP theory has been successfully applied to predict and model the excess molar volumes of many mixtures containing ionic liquids [ 46 , 47 , 48 , 49 , 50 ] and some aqueous systems with deep eutectic solvents [ 18 , 51 , 52 ].…”

Section: Resultsmentioning

confidence: 99%

Novel Binary Mixtures of Alkanolamine Based Deep Eutectic Solvents with Water—Thermodynamic Calculation and Correlation of Crucial Physicochemical Properties

et al. 2022

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This paper demonstrates the assessment of physicochemical and thermodynamic properties of aqueous solutions of novel deep eutectic solvent (DES) built of tetrabutylammonium chloride and 3-amino-1-propanol or tetrabutylammonium bromide and 3-amino-1-propanol or 2-(methylamino)ethanol or 2-(butylamino)ethanol. Densities, speeds of sound, refractive indices, and viscosities for both pure and aqueous mixtures of DES were investigated over the entire range of compositions at atmospheric pressure and T = (293.15 ‒ 313.15) K. It was concluded that the experimental data were successfully fitted using the Jouyban–Acree model with respect to the concentration. Obtained results showed that this mathematical equation is an accurate correlation for the prediction of aqueous DES properties. Key physicochemical properties of the mixtures—such as excess molar volumes, excess isentropic compressibilities, deviations in viscosity, and deviations in refractive indices—were calculated and correlated by the Redlich–Kister equation with temperature-dependent parameters. The non-ideal behavior of the studied systems were also evaluated by using the Prigogine−Flory−Patterson theory and the results were interpreted in terms of interactions between the mixture components.

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Section: Resultsmentioning

confidence: 99%

Novel Binary Mixtures of Alkanolamine Based Deep Eutectic Solvents with Water—Thermodynamic Calculation and Correlation of Crucial Physicochemical Properties

et al. 2022

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“…Ionic liquids (ILs), organic salts composed entirely of ions and having melting point less than the boiling point of water, are used in recent times as the replacement of volatile organic compounds because of their unique physicochemical properties. − These properties including negligible vapor pressure, higher thermal and chemical stability, high electrical conductivity, adjustable polarity, and ability to solvate a big range of solutes are easily fine-tuned through judiciously selecting the constituting cations and anions and also through mixing them with suitable cosolvents. Several groups including our own group had studied the thermophysical properties of ILs with various organic solvents including water, alcohol, ester, ether, and amine, to name a few. − Among these properties, density and isentropic compressibility are used to design various industrial equipment, whereas molecular level behavior and molecular interaction persisting between the components of the mixture can be understood through measuring the refractive index. Furthermore, accurate measurement of these properties and knowledge of molecular interaction between the components of the mixture are needed to deal with various industrial processes such as catalysis, biocatalytic reactions, various synthetic reactions, in designing the industrial processes such as in polymerization, electrochemical processes, fuel and solar cell technology, and thermal fluids, to name a few .…”

Section: Introductionmentioning

confidence: 99%

Density, Speeds of Sound, and Refractive Index of Pure and Binary Mixtures of Ionic Liquids Based on Imidazolium Cations and Tetrafluoroborate Anions with Cyclohexylamine

Master

Malek

2021

J. Chem. Eng. Data

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Conventionally used volatile organic solvents in various industrial processes are recently replaced by ionic liquids (ILs) in their pure form and their mixture with suitable cosolvents. In a quest to tune the thermophysical properties of the pure ILs through mixing with the organic solvents, in the present investigation, we had measured the density (ρ), speeds of sound (u), and refractive index (n D) of pure ILs with imidazolium cations and tetrafluoroborate anions and their mixture with cyclic amine, cyclohexylamine, over the entire composition range and temperatures ranging from 293.15 to 323.15 K and at atmospheric pressure. Various thermodynamic and acoustic properties such as excess molar volume (V m E), excess molar isentropic compressibility (Ks,m E), and deviation in refractive index (Δϕ n D) have been determined and used to interpret the molecular interaction within the components of the mixture. Investigation was carried out to understand the nonideal behavior of the mixture, and the influence of the alkyl chain and temperature was reported. The experimentally obtained refractive index is correlated with the theoretically calculated refractive index through several mixing rules. Finally, the experimentally calculated V m E values were compared with the V m E predicted through Prigogine–Flory–Patterson (PFP) theory and the extended real association model. Results of the present investigation give useful insights into fine-tuning the thermophysical properties of ILs for their specialized applications.

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“…Reports on the physicochemical properties of various binary mixtures of ILs with various organic solvents are available in the literature. 16−51 In this context, several researchers have studied various thermodynamic properties of ILs with water, 12,16−21 alcohols, 8,10,13,22,23 alkanes, 24 ethers, 9 amines, 25 and alkoxyalkanol. 26,27 Most of these works present measurements of density, 17−31,33−42 speed of sound, 18−21,29−37 refractive index, 17,[29][30][31][32][33][34][35][36][37]42 and viscosity.…”

Section: Introductionmentioning

confidence: 99%

“…These properties are fine-tuned through (i) judicious selection of the cations and/or anions and (ii) addition of the co-solvent. Among the class of cations, imidazolium-based ILs are extensively studied. − Judicious selection of the co-solvent resulted in the tailor-made properties of the ILs. In last decade, there have been 1754 research papers available in SCOPUS when the search criteria was entered as “ionic liquid” and “binary mixtures”.…”

Section: Introductionmentioning

confidence: 99%

“…In the absence of sufficient and reliable models that predict the physical properties of these mixtures, the only way is to measure them experimentally. Reports on the physicochemical properties of various binary mixtures of ILs with various organic solvents are available in the literature. − In this context, several researchers have studied various thermodynamic properties of ILs with water, ,− alcohols, ,,,, alkanes, ethers, amines, and alkoxyalkanol. , Most of these works present measurements of density, − ,− speed of sound, − ,− refractive index, ,− …”

Section: Introductionmentioning

confidence: 99%

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Temperature, Composition, and Alkyl Chain-Dependent Molecular Interactions between Imidazolium-Based Ionic Liquids with N-Methylaniline and N-Ethylaniline: Experimental and Theoretical Study

Master

Malek

2020

J. Chem. Eng. Data

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Ionic liquids (ILs), an alternative to conventional molecular organic solvents, have attracted the attention of the scientific community because of their tunable unique physicochemical properties. Among the tested strategies, addition of co-solvents is the most convenient choice to alter the physicochemical properties of ILs for their industrial applications. In the present article, we have measured the density (ρ), speeds of sound (u), and refractive index (n D ) for six binary mixtures of N-methylaniline (NMA) and N-ethylaniline (NEA) + BmimBF 4 + HmimBF 4 + OmimBF 4 over the entire range of composition and at temperatures ranging from 293.15 to 323.15 K at 5 K intervals and at atmospheric pressure. Excess molar volume (V m E ), excess molar isentropic compressibility (K s,m E ), and deviation in the refractive index (Δ φ n D ) on volume fraction basis were calculated from these measured thermophysical properties. Influence of temperature on the excess and deviation properties has been studied. V m E , K s,m E , and Δ φ n D were fitted to the Redlich−Kister polynomial equation, and the parameters for the binary coefficients are reported. The influence of the alkyl chain length of ILs on the thermophysical properties of the mixtures of secondary amines was studied. We have discussed the intermolecular interactions between the ILs and amine molecules using well-known arguments. We further predicted the refractive indices of the studied mixtures using various mixing rules, and the resulting values have been compared with the experimental values through the standard deviation. Experimentally calculated excess molar volumes have been compared with the predicted values of the Prigogine−Flory−Patterson theory and the extended real association model at 298.15 K.

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Experimental and theoretical excess molar properties of imidazolium based ionic liquids with isomers of butanol

Cited by 33 publications

References 62 publications

Novel Binary Mixtures of Alkanolamine Based Deep Eutectic Solvents with Water—Thermodynamic Calculation and Correlation of Crucial Physicochemical Properties

Novel Binary Mixtures of Alkanolamine Based Deep Eutectic Solvents with Water—Thermodynamic Calculation and Correlation of Crucial Physicochemical Properties

Density, Speeds of Sound, and Refractive Index of Pure and Binary Mixtures of Ionic Liquids Based on Imidazolium Cations and Tetrafluoroborate Anions with Cyclohexylamine

Temperature, Composition, and Alkyl Chain-Dependent Molecular Interactions between Imidazolium-Based Ionic Liquids with N-Methylaniline and N-Ethylaniline: Experimental and Theoretical Study

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