Partial molar volumes and partial molar isentropic compressibilities of 1-butyl-3-methylimidazolium tetrafluoroborate + N-methylaniline binary mixture at temperatures T = (293.15 to 323.15) K and atmospheric pressure

Rao, V. Srinivasa; Krishna, T. Vijaya; Mohan, T. Madhu; Rao, P. Madhusudana

doi:10.1016/j.molliq.2016.05.033

Cited by 18 publications

(9 citation statements)

References 37 publications

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“…Rao et al measured the density and speeds of sound for the binary mixture of BmimBF 4 and NMA over the entire range of mole fraction and at temperatures ranging from 293.15 to 323.15 K under atmospheric pressure. 53 Authors also have calculated the V m E and K s,m E from the basic measurements. We have compared the V m E and K s,m E values of the BmimBF 4 with NMA and NEA at 298.15 K in Figures 19 and 20, respectively.…”

Section: Discussionmentioning

confidence: 99%

“…and Pereiro who also observed simliar results for ethanol. Rao et al measured the density and speeds of sound for the binary mixture of BmimBF 4 and NMA over the entire range of mole fraction and at temperatures ranging from 293.15 to 323.15 K under atmospheric pressure . Authors also have calculated the V m E and K s,m E from the basic measurements.…”

Section: Discussionmentioning

confidence: 99%

“…Comparison experimental (orange ■) and literature (▲) K s,m E for BmimBF 4 + N -methylaniline at 293.15 K.…”

Section: Discussionmentioning

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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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

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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“…Imidazolium cations are the most measured class of ionic liquid and these ionic liquids have been utilised in many areas including catalysis, electrochemistry, synthesis as well as industrial applications [17,18,19,20,21]. Imidazolium based ionic liquids are also useful in the procedure for the removal of carbon dioxide from natural gas [22] as well as in extractive desulfurization of liquid fuels, principally with consideration of those sulphur compounds that are extremely complex to remove by ordinary hydrodesulfurization (HDS) processes [23]. Recently, osmium oxide has been recycled by the use of 1-ethy-3-methylimidazolium tetrafluoroborate [C 2 mim] [BF 4 ] [24].…”

Section: Introductionmentioning

confidence: 99%

Molecular interaction studies of binary systems comprising [C2mim] [BF4] with ethyl acetoacetate or benzaldehyde

Kabane

Chokkareddy

Redhi

2019

Heliyon

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In this work, new data for the binary mixtures containing 1-ethyl-3-methylimidazolium tetrafluoroborate ([C 2 mim] [BF 4 ]) ionic liquid (IL) with benzaldehyde or ethyl acetoacetate were investigated under atmospheric pressure (p = 0.1 MPa) and at temperatures (293.15–313.15) K. The binary mixtures were completely miscible at all proportions. Densities ( ), viscosities ( ) as well as speeds of sound were conducted across the entire range of mole fraction ( = 0 to 1). The excess properties which include excess molar volumes , intermolecular free length ( ), deviations in viscosity ( ), isentropic compressibility , apparent molar isentropic compressibility ( ) as well as deviation in isentropic compressibility were determined from the experimentally found results of speed of sound, viscosity and density. The obtained derived properties have been elucidated in terms of solute-solvent interactions taking place in the systems. The investigation of thermophysical properties of organic solvents with ionic liquids is essential as they decide the transformation of ionic liquids from small laboratory scale to large industrial applications. The obtained results are important and essential as they describe the molecular interactions, and can be used in constructing the structure-property correlation as well as molecular modelling that exist between [C 2 mim] [BF 4 ] with benzaldehyde or ethyl acetoacetate. Redlich-Kister polynomial equation was used to fit the excess values and a good correlation was achieved.

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“…In order to overcome this disadvantage, ILs are mixed with organic solvents having low viscosity to enhance the transport mechanism without affecting their other beneficial characteristics. Further, the information about the thermodynamic properties and molecular interactions of ILs + organic solvents plays a vital role in various engineering applications. − …”

Section: Introductionmentioning

confidence: 99%

Density, Speed of Sound, and Dynamic Viscosity of 1-Butyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide/1-Butyl-3-methylimidazolium Hexafluorophosphate and N-Methylaniline Binary Systems from T = 298.15 to 323.15 K at 0.1 MPa

Goddu

Mohan²,

Tadekoru³

et al. 2019

J. Chem. Eng. Data

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Density, speed of sound, and viscosity values were measured for different binary mixture concentrations of 1-butyl-3methylimidazolium bis(trifluoromethylsulfonyl)imide ([Bmim][NTf 2 ]) + N-methylaniline (NMA) and 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim][Pf 6 ]) + NMA systems at temperatures from T = 298.15 to 323.15 K under atmospheric pressure. The excess values of molar volume, molar isentropic compressibility, intermolecular free length, and viscosity were calculated. The partial molar volumes and partial molar isentropic compressibilities at infinite dilutions were also estimated. The Redlich−Kister equation was utilized to evaluate coefficients and standard deviations. The mechanism of effective packing between [Bmim][NTf 2 ]/ [Bmim][Pf 6 ] and NMA was represented by the negative excess molar volumes. In both the studied systems, the occurrence of strong chemical interactions was represented by the negative excess intermolecular free length values. The present work clearly showed that the simultaneous analysis of excess properties could provide a comprehensive description of molecular interactions occurring in the binary mixtures, specifically if the component molecules have different sizes. Further, the high viscosities of the ionic liquids were decreased by mixing with low viscous NMA. Hence, the investigated systems could be more suitable for their possible applications in the transport mechanism and absorption of gasses.

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Partial molar volumes and partial molar isentropic compressibilities of 1-butyl-3-methylimidazolium tetrafluoroborate + N-methylaniline binary mixture at temperatures T = (293.15 to 323.15) K and atmospheric pressure

Cited by 18 publications

References 37 publications

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

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

Molecular interaction studies of binary systems comprising [C2mim] [BF4] with ethyl acetoacetate or benzaldehyde

Density, Speed of Sound, and Dynamic Viscosity of 1-Butyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide/1-Butyl-3-methylimidazolium Hexafluorophosphate and N-Methylaniline Binary Systems from T = 298.15 to 323.15 K at 0.1 MPa

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