Conductometric and refractometric study of 1-Ethyl-3-methylimidazolium Bromide ionic liquid in water + ethanol/1-propanol mixtures at T = (298.2, 308.2 and 318.2) K

Khoshalhan-Rastekenari, Maryam; Ghalami‐Choobar, Bahram; Gilani, A. Ghanadzadeh

doi:10.1016/j.molliq.2017.04.077

Cited by 3 publications

(2 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10 Regarding the study of these properties, a large number of studies have been published in recent years. 11,12 Thermodynamic properties of many binary mixtures containing thiophene + octane, 1-hexyl-3-methylimidazolium bromide [[HMIm]Br], and 1-octyl-3methylimidazolium bromide were presented at various temperatures and atmospheric pressures (0.0865 MP a ), and some thermodynamic parameters were determined. 13 The volumetric and transport properties of the 1-butyl- bromide ionic liquid were quantified in water, methanol, ethanol, acetonitrile, and acetone.…”

Section: Introductionmentioning

confidence: 99%

“…14 The activity coefficient measurements for 1-ethyl-3-methylimidazolium chloride ([EMIm]Cl) in (formamide + water) mixtures using the potentiometric method have been reported. 15 Effect of the ionic liquid 1-octyle-3-methylimidazolium bromide on the thermophysical properties of aqueous D-glucose solutions at 298.15 K. 16 Conductometric and refractometric study of the 1ethyl-3-methylimidazolum bromide ionic liquid in water + ethanol/1-propanol mixtures at T = 298.2, 308.2, and 318.2 K. 17 In continuation of previous works on imidazolium-based ILs, such as [5,11,12,15], the obtained results on the transport and thermodynamic properties, including conductivity and activity coefficients (γ ± ) of [HMIm]Br in [HMIm]Br + ethanol + water ternary mixtures, are presented. The obtained results were evaluated by the Fuoss−Onsager equation to determine the limiting molar conductivity (Λ 0 ) and ion association constant (K A ).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study of Thermodynamic and Transport Properties of the Ternary System (1-Hexyl-3-Methylimidazolium Bromide + Ethanol + Water) Based on Potentiometric and Conductometric Measurements

Forough,

Ghalami-Choobar,

Ashtari-Delivand

2024

J. Chem. Eng. Data

View full text Add to dashboard Cite

In this work, the molar conductivities and mean activity coefficients of 1-hexyl-3- methylimidazolium bromide [HMIm]Br in the ternary system [HMIm]Br + ethanol + water were reported using conductometric and potentiometric techniques, respectively. Conductometric data wereobtained for [HMIm]Br ionic liquids from 0.0008 to 0.2496 mol·kg–1 on various mass fractions of ethanol in ethanol + water mixtures ((w/w)% = wethanol/wmixture = 0, 10, 20, and 30%) at T = 298.2, 308.2, and 318.2 K. Ion association constants (K a ) and limiting molar conductivities (Λ0) of [HMIm]Br were achieved by the Fuoss–Onsager equation and utilized to get the thermodynamic functions. Moreover, potentiometric data were collected for the galvanic cell of the type: [HMIm]–ISE|[HMIm]Br(m[HMIm]Br), ethanol (wt)%, H2O (1 -wt) %|Br–ISE in water + ethanol mixtures (wethanol /wwater+ethanol = 0, 10, and 20%) over the ionic strength varying from 0.0094 to 1.7437 mol·kg–1 at T = 298.2 and 308.2 K. Thermodynamic properties modeling was implemented using the Pitzer ion interaction model and the values of Pitzer ion-interaction parameters β(0), β(1), and C φ were evaluated. Then, thermodynamic properties, such as mean activity coefficients, excess Gibbs free energy, osmotic coefficients, and solvent activity. were determined.

show abstract

Section: Introductionmentioning

confidence: 99%