Density, transport properties and electrochemical potential windows for the 2-hydroxy-N,N,N-trimethylethanaminium chlorides based ionic liquids at several temperatures

Virgil Constantin, Ashok K. Adya, Ana-Maria Popescu

Research output: Contribution to journalArticle

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Abstract

The densities and transport properties of 2-hydroxy-N,N,N-trimethylethanaminium chlorides (choline chloride) based ionic liquids (ILs) were measured as a function of temperature in the range 298.15–353.15 K. Three binary mixtures (1:1 mole ratio) of choline chloride with ethylene glycol, triethanolamine and oxalic acid respectively, were prepared and characterized. Correlations for the temperature dependence of the measured properties have been made and discussed in the terms of Arrhenius theory. Other important properties, such as isothermal compressibility, molecular volume, lattice energy, heat capacity, molar Gibbs energy, enthalpy and entropy of activation of viscous flow were derived for the studied ILs using the experimental data. The relationship between molar conductivity and viscosity were determined by the fractional Walden rule, which shows excellent linear behavior; however, the average slope is far from unity. The electrochemical potential windows of ILs were also determined.
Original languageEnglish
Pages (from-to)58-66
Number of pages9
JournalFluid Phase Equilibria
Volume395
Early online date14 Mar 2015
DOIs
Publication statusPublished - 15 Jun 2015

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Ionic Liquids
Choline
Ionic liquids
Transport properties
Chlorides
choline
transport properties
chlorides
liquids
Triethanolamine
Oxalic Acid
acids
lattice energy
oxalic acid
Oxalic acid
Ethylene Glycol
viscous flow
Viscous flow
Gibbs free energy
Binary mixtures

Cite this

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title = "Density, transport properties and electrochemical potential windows for the 2-hydroxy-N,N,N-trimethylethanaminium chlorides based ionic liquids at several temperatures",
abstract = "The densities and transport properties of 2-hydroxy-N,N,N-trimethylethanaminium chlorides (choline chloride) based ionic liquids (ILs) were measured as a function of temperature in the range 298.15–353.15 K. Three binary mixtures (1:1 mole ratio) of choline chloride with ethylene glycol, triethanolamine and oxalic acid respectively, were prepared and characterized. Correlations for the temperature dependence of the measured properties have been made and discussed in the terms of Arrhenius theory. Other important properties, such as isothermal compressibility, molecular volume, lattice energy, heat capacity, molar Gibbs energy, enthalpy and entropy of activation of viscous flow were derived for the studied ILs using the experimental data. The relationship between molar conductivity and viscosity were determined by the fractional Walden rule, which shows excellent linear behavior; however, the average slope is far from unity. The electrochemical potential windows of ILs were also determined.",
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Density, transport properties and electrochemical potential windows for the 2-hydroxy-N,N,N-trimethylethanaminium chlorides based ionic liquids at several temperatures. / Constantin, Virgil; Adya, Ashok K.; Popescu, Ana-Maria.

In: Fluid Phase Equilibria, Vol. 395, 15.06.2015, p. 58-66.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Density, transport properties and electrochemical potential windows for the 2-hydroxy-N,N,N-trimethylethanaminium chlorides based ionic liquids at several temperatures

AU - Constantin, Virgil

AU - Adya, Ashok K.

AU - Popescu, Ana-Maria

PY - 2015/6/15

Y1 - 2015/6/15

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AB - The densities and transport properties of 2-hydroxy-N,N,N-trimethylethanaminium chlorides (choline chloride) based ionic liquids (ILs) were measured as a function of temperature in the range 298.15–353.15 K. Three binary mixtures (1:1 mole ratio) of choline chloride with ethylene glycol, triethanolamine and oxalic acid respectively, were prepared and characterized. Correlations for the temperature dependence of the measured properties have been made and discussed in the terms of Arrhenius theory. Other important properties, such as isothermal compressibility, molecular volume, lattice energy, heat capacity, molar Gibbs energy, enthalpy and entropy of activation of viscous flow were derived for the studied ILs using the experimental data. The relationship between molar conductivity and viscosity were determined by the fractional Walden rule, which shows excellent linear behavior; however, the average slope is far from unity. The electrochemical potential windows of ILs were also determined.

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DO - 10.1016/j.fluid.2015.03.025

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