Study on thermo physical and excess molar properties of binary systems of ionic liquids. I: [Cnmim][PF6] (n=6, 8) and alkyl acetates

Malek, Naved I.; Singh, Archana; Surati, Roshani; Ijardar, Sushma P.

doi:10.1016/j.jct.2014.01.012

Cited by 40 publications

(30 citation statements)

References 71 publications

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“…For [C 8 mim][PF 6 ], density at 298.15 K is higher by 0.06% to that of Tariq et al [22] and lower to (0.08 and 0.16)% by Pereiro et al [14] and Kenneth et al [21]. Due to the possible impurity, the density of [C 6 mim][PF 6 ] and [C 8 mim][PF 6 ] in current investigation in higher than about (0.41 and 1.29)% respectively from the previously published results [9].…”

Section: Introductioncontrasting

confidence: 62%

“…Digital automatic refractometer (Abbemat 300) from Anton Paar was used to measure the refractive index. Details of the experimental setup and measuring procedure have been given in previous publications [7][8][9][10]. Solid-state built in thermostat controls the temperature by ±0.001 K in DSA 5000 and by ±0.0001 K in Abbemat 300.…”

Section: Apparatus and Proceduresmentioning

confidence: 99%

“…We are engaged with the systematic investigation on the molecular interactions and structural effects of ILs with organic solvents and mixtures of common molecular solvents and have found interesting results [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Several researchers, including our own group[7][8][9][10][72][73][74][75][76][77][78][79][80][81] have successfully applied PFP theory for the prediction of excess molar volume for the mixtures containing ILs. As per the theory, a molecule is made up of equal segments which interact with the neighbouring sites.…”

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confidence: 99%

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Investigation on thermophysical and excess properties of binary mixtures of imidazolium based ionic liquids at temperatures (293.15 to 323.15) K: III [C n mim][PF 6 ] ( n = 4, 6, 8) + THF

Vaid

Ijardar

et al. 2015

The Journal of Chemical Thermodynamics

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Section: Introductioncontrasting

confidence: 62%

Section: Apparatus and Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Investigation on thermophysical and excess properties of binary mixtures of imidazolium based ionic liquids at temperatures (293.15 to 323.15) K: III [C n mim][PF 6 ] ( n = 4, 6, 8) + THF

Vaid

Ijardar

et al. 2015

The Journal of Chemical Thermodynamics

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“…[C n mim][Br] (n = 6 and 8) were synthesized in our laboratory according to the procedure reported in the literature [52][53][54]. Briefly, the reaction of 1-methylimidazole and an excess molar amount of the appropriate alkyl bromide was performed in 1,1,1-trichloroethane under reflux at ca.…”

Section: Introductionmentioning

confidence: 99%

Effect of [C n mim][Br] Based Ionic Liquids on the Aggregation Behavior of Tetradecyltrimethylammonium Bromide in Aqueous Medium

Vaid

Bhamoria

et al. 2015

J Solution Chem

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In order to gain insight into the role of environmentally benign imidazolium based ionic liquids (ILs) to alter the physicochemical properties of single chain cationic surfactants, we have investigated the effect of 1-hexyl-3-methylimidazolium bromide ([C 6 mim][Br]) and 1-octyl-3-methylimidazolium bromide ([C 8 mim][Br]) on the aggregation behavior of aqueous tetradecyltrimethylammonium bromide (TTAB). The critical micelle concentration (CMC) of TTAB at different concentrations of ILs was determined through conductance, surface tension, spectral change of a dye by UV-Vis measurement, and the pyrene fluorescence probe measurement techniques at 298.15 K. Decreasing of the CMC of aqueous TTAB with increasing ILs concentration proves the micellization is favorable. The effect of ILs on the properties of TTAB was verified by using NaBr. Surface tension measurements complimented by dynamic light scattering (DLS) data revealed the packing density of TTAB aggregates at different concentrations of ILs. The effective area of TTAB molecules at the air/water interface was calculated by the Gibbs adsorption isotherm and found to decrease up to 0.6 wt% of ILs followed by an increase at higher concentration. DLS data revealed an increase in micellar size of TTAB at higher concentration of IL with decrease in the aggregation number (N agg ), determined by the fluorescence quenching method.

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Insights into Non‐Ideal Behavior of Double Salt Ionic Liquids with Common Cation: Volumetric Behaviour, Molecular Dynamics Simulations and NMR Experiments

2019

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The designer concept of ionic liquid (ILs) allows combination of different types of cation with anion to manipulate desire sets of physico-chemical properties. The additional degree of freedom to improve these properties is addition of second IL, i. e. mixture of two pure ILs, known as "Double Salt Ionic Liquids (DSILs)". Depending on variation in physico chemical properties, DSILs could be ideal or non-ideal solution. The present study was explores non-ideal behaviour of three novel combination of imidazolium based DSILs using physico-chemical properties. The proposed DSILs are homogeneous mixtures of two pure ILs with common cation and two different anions: ethylsulfate and bis(trifluoromethylsulfonyl)imide / trifluoromethanesulfonate / thiocyanate. The densities, 1 and speeds of sound, u for proposed DSILs were determined at different temperatures. The excess molar volumes V m E and excess molar isentropic compressibilities K S,m E were calculated and discussed in view of chemical structures of pure ILs, nature of anions and type of interaction between ions. The V m E were found to be positive for all cases, whereas positive or negative K S,m E were observed for studied DSILs. The behaviour of DSILs was explained by molecular dynamics simulations in terms of interaction energies and hydrogen bonds between components of DSILs as well as 1 H NMR results. The results indicate random distribution of anions around imidazolium cation and structural changes during formulation of DSILs.[a] Dr.

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Study on thermo physical and excess molar properties of binary systems of ionic liquids. I: [Cnmim][PF6] (n=6, 8) and alkyl acetates

Cited by 40 publications

References 71 publications

Investigation on thermophysical and excess properties of binary mixtures of imidazolium based ionic liquids at temperatures (293.15 to 323.15) K: III [C n mim][PF 6 ] ( n = 4, 6, 8) + THF

Investigation on thermophysical and excess properties of binary mixtures of imidazolium based ionic liquids at temperatures (293.15 to 323.15) K: III [C n mim][PF 6 ] ( n = 4, 6, 8) + THF

Effect of [C n mim][Br] Based Ionic Liquids on the Aggregation Behavior of Tetradecyltrimethylammonium Bromide in Aqueous Medium

Insights into Non‐Ideal Behavior of Double Salt Ionic Liquids with Common Cation: Volumetric Behaviour, Molecular Dynamics Simulations and NMR Experiments

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