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Characterization of Ionic Liquid Solvents Using a Temperature Independent, Ion-Specific Abraham Parameter Model

Description: Experimental data for the logarithm of the gas-to-ionic liquid partition coefficient (log K) have been compiled from the published literature for over 40 ionic liquids over a wide temperature range. Temperature independent correlations based on the Gibbs free energy equation utilizing known Abraham solvation model parameters have been derived for the prediction of log K for 12 ionic liquids to within a standard deviation of 0.114 log units over a temperature range of over 60 K. Temperature independent log K correlations have also been derived from correlations of molar enthalpies of solvation and molar entropies of solvation, each within standard deviations of 4.044 kJ mol-1 and 5.338 J mol-1 K-1, respectively. In addition, molar enthalpies of solvation and molar entropies of solvation can be predicted from the Abraham coefficients in the temperature independent log K correlations to within similar standard deviations. Temperature independent, ion specific coefficients have been determined for 26 cations and 15 anions for the prediction of log K over a temperature range of at least 60 K to within a standard deviation of 0.159 log units.
Date: December 2014
Creator: Stephens, Timothy W.
Partner: UNT Libraries

Comments Concerning "Study of Molecular Interaction in Binary Liquid Mixtures of Ethyl Acetoacetate with Chloroform and Dimethylsulphoxide using Excess Acoustic Parameters and Spectroscopic Methods

Description: Article commenting on a previously published article, "Study of molecular interaction in binary liquid mixtures of ethyl acetoacetate with chloroform and dimethylsulphoxide using excess acoustic parameters and spectroscopic methods."
Date: February 18, 2014
Creator: Acree, William E. (William Eugene) & Stephens, Timothy W.
Partner: UNT College of Arts and Sciences

Comments Regarding "Density, Speed of Sound, Refractive Index and Derivatives Properties of the Binary Mixture N-Hexane + N-Heptane (or N-Octane or N-Nonane), T = 288.15 - 313.15 K"

Description: This article offers comment on "Density, speed of sound, refractive index and derivatives properties of the binary mixture N-Hexane + N-Heptane (or N-Octane or N-Nonane), T=288.15 - 313.15 K."
Date: April 9, 2013
Creator: Acree, William E. (William Eugene) & Stephens, Timothy W.
Partner: UNT College of Arts and Sciences

Activity Coefficients at Infinite Dilution for Organic Solutes Dissolved in Three 1-Alkyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquids Bearing Short Linear Alkyl Side Chains of Three to Five Carbons

Description: Article discussing activity coefficients at infinite dilution for organic solutes dissolved in three 1-alkyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids bearing short linear alkyl side chains of three to five carbons.
Date: July 30, 2013
Creator: Mutelet, Fabrice; Hassan, El-Sayed R. E.; Stephens, Timothy W.; Acree, William E. (William Eugene) & Baker, Gary A.
Partner: UNT College of Arts and Sciences

Abraham model correlations for predicting gas-to-liquid partition coefficients and activity coefficients of organic solutes dissolved in 1-(2-methoxyethyl)-1-methylpyrrolidinium tris(pentafluoroethyl) trifluorophosphate

Description: Article on Abraham model correlations for predicting gas-to-liquid partition coefficients and activity coefficients of organic solutes.
Date: 2013
Creator: Jiang, Rui; Anderson, Jared L.; Stephens, Timothy W.; Acree, William E. (William Eugene) & Abraham, M. H. (Michael H.)
Partner: UNT College of Arts and Sciences

Correlation of the Solubilizing Abilities of 1-Butyl-1-methyl-pyrrolidinium Tris(pentafluoroethyl)-trifluorophosphate, 1-Butyl-1-methylpyrrolidinium Triflate and 1-Methoxyethyl-1-methylmorpholinium Tris(pentafluoroethyl) trifluorophosphate

Description: This article discusses the correlation of the solubilizing abilities.
Date: May 2013
Creator: Twu, Pamela; Anderson, Jared L.; Stephens, Timothy W.; Wilson, Anastasia; Acree, William E. (William Eugene) & Abraham, M. H. (Michael H.)
Partner: UNT College of Arts and Sciences

Correlations of solute partitioning and enthalpies of solvation for organic solutes in ionic liquids using a temperature independent free energy relationship

Description: This article discusses correlations of solute partitioning and enthalpies of solvation for organic solutes in ionic liquids using a temperature independent free energy relationship.
Date: 2013
Creator: Stephens, Timothy W.; Willis, Bria; Dabadge, Nishu; Tian, Amy; Acree, William E. (William Eugene) & Abraham, M. H. (Michael H.)
Partner: UNT College of Arts and Sciences

Determination of the Solubilizing Character of 1-Methoxyethyl-1-Methylpiperidinium Tris(Pentafluoroethyl)Trifluorophosphate Based on the Abraham Solvation Parameter Model

Description: Article on determination of solubilizing character of 1-methoxyethyl-1-methylpiperidinium tris(pentafluoroethyl) trifluorophosphate based on the Abraham solvation parameter model.
Date: 2012
Creator: Twu, Pamela; Anderson, Jared L.; Stephens, Timothy W.; Acree, William E. (William Eugene) & Abraham, M. H. (Michael H.)
Partner: UNT College of Arts and Sciences

Supporting information for Abraham model correlations for solute partitioning into o-xylene, m-xylene and p-xylene from both water and the gas phase

Description: This document includes supporting information and figures for an article on the Abraham model correlations for solute partitioning into o-xylene, m-xylene and p-xylene from both water and the gas phase.
Date: September 2011
Creator: Stephens, Timothy W.; De la Rosa, Nohelli E.; Saifullah, Mariam; Ye, Shulin; Quay, Amanda N.; Chou, Vicky et al.
Partner: UNT College of Arts and Sciences

Abraham model correlations for solute partitioning into o-xylene, m-xylene and p-xylene from both water and the gas phase

Description: Article on Abraham model correlations for solute partitioning into o-xylene, m-xylene and p-xylene from both water and the gas phase.
Date: September 2011
Creator: Stephens, Timothy W.; De la Rosa, Nohelli E.; Saifullah, Mariam; Ye, Shulin; Chou, Vicky; Quay, Amanda N. et al.
Partner: UNT College of Arts and Sciences

Enthalpy of Solvation Correlations for Organic Solutes and Gases Dissolved in 2-Propanol, 2-Butanol, 2-Methyl-1-Propanol and Ethanol

Description: This article discusses the enthalpy of solvation correlations for organic solutes and gases dissolved in 2-propanol, 2-butanol, 2-methyl-1-propanol and ethanol.
Date: August 20, 2011
Creator: Stephens, Timothy W.; De la Rosa, Nohelli E.; Saifullah, Mariam; Ye, Shulin; Chou, Vicky; Quay, Amanda N. et al.
Partner: UNT College of Arts and Sciences

Experimental and Predicted Solubilities of 3,4-Dimethoxybenzoic Acid in Select Organic Solvents of Varying Polarity and Hydrogen-bonding Character

Description: This article discusses the experimental and predicted solubilities of 3,4-dimethoxybenzoic acid in select organic solvents of varying polarity and hydrogen-bonding character.
Date: 2013
Creator: Bowen, Kaci R.; Stephens, Timothy W.; Lu, Helen; Satish, Kalpana; Shan, Danyang; Acree, William E. (William Eugene) et al.
Partner: UNT College of Arts and Sciences

Correlation of solute transfer into alkane solvents from water and from the gas phase with updated Abraham model equations

Description: This article discusses the correlation of solute transfer into alkane solvents from water and from the gas phase with updated Abraham model equations.
Date: 2012
Creator: Stephens, Timothy W.; Quay, Amanda N.; Chou, Vicky; Loera, Matthew; Shen, Connie; Wilson, Anastasia et al.
Partner: UNT College of Arts and Sciences

Determination of the Solubilizing Character of 1-(2-Hydroxyethyl)-1-Methylimidazolium Tris(Pentafluoroethyl)Trifluorophosphate Based on the Abraham Solvation Parameter Model

Description: Article discussing the solubilizing character of 1-(2-hydroxyethyl)-1-methylimidazolium tris(pentafluoroethyl)trifluorophosphate based on the Abraham solvation parameter model.
Date: 2013
Creator: Twu, Pamela; Anderson, Jared L.; Stephens, Timothy W.; Lu, Helen; Satish, Kalpana; Shan, Danyang et al.
Partner: UNT College of Arts and Sciences

Supporting Material for: Thermochemical Investigations of Solute Transfer into Ionic Liquid Solvents: Updated Abraham Model Equation Coefficients for Solute Activity Coefficient and Partition Coefficient Predictions

Description: This document includes supplemental material to an article titled "Thermochemical Investigations of Solute Transfer into Ionic Liquid Solvents: Updated Abraham Model Equation Coefficients for Solute Activity Coefficient and Partition Coefficient Predictions," published in Physics and Chemistry of Liquids.
Date: February 25, 2014
Creator: Stephens, Timothy W.; Chou, Vicky; Quay, Amanda N.; Shen, Connie; Dabadge, Nishu; Tian, Amy et al.
Partner: UNT College of Arts and Sciences

Thermochemical Investigations of Solute Transfer into Ionic Solvents: Updated Abraham Model Equation Coefficients for Solute Activity Coefficient and Partition Coefficient Predictions

Description: Article on thermochemical investigations of solute transfer into ionic liquid solvents and updated Abraham model equation coefficients for solute activity coefficient and partition coefficient predictions.
Date: February 25, 2014
Creator: Stephens, Timothy W.; Chou, Vicky; Quay, Amanda N.; Shen, Connie; Dabadge, Nishu; Tian, Amy et al.
Partner: UNT College of Arts and Sciences