Thermodynamics of binary mixtures of N-methyl-2-pyrrolidinone and ketone. Experimental results and modelling of the (solid+liquid) equilibrium and the (vapour+liquid) equilibrium. The modified UNIFAC (Do) model characterization

Domańska, Urszula; Łachwa, Joanna

doi:10.1016/j.jct.2004.11.007

Cited by 34 publications

(17 citation statements)

References 40 publications

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“…The isothermal VLE data for an aqueous solution have been measured by an ebulliometric method proposed by Rogalski and Malanowski within the pressure range up to p = 85 kPa at a wide composition range. A detailed description of the experimental procedure was described earlier . The main part of the apparatus is a specially designed ebulliometer which is connected to the pressure stabilizing system comprising the isolated container with a volume of 50 dm 3 enabling the pressure to be kept constant within 0.1 kPa and to dampen the pressure fluctuations caused by the bumping of the liquid boiling in the ebulliometer or by the variation of the temperature of the surroundings.…”

Section: Methodsmentioning

confidence: 99%

“…A detailed description of the experimental procedure was described earlier. 45 The main part of the apparatus is a specially designed ebulliometer which is connected to the pressure stabilizing system comprising the isolated container with a volume of 50 dm 3 enabling the pressure to be kept constant within 0.1 kPa and to dampen the pressure fluctuations caused by the bumping of the liquid boiling in the ebulliometer or by the variation of the temperature of the surroundings. The equilibrium temperature was measured using a resistance thermometer (type P-550, Roth, Germany) with a precision of 0.01 K. The pressure was measured with a precision of 0.1 kPa by a tensiometric vacuum meter (type CL 300, ZEPWN, Poland).…”

Section: Introductionmentioning

confidence: 99%

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Temperature and Composition Dependence of the Thermodynamic Properties of an Aqueous Solution of 1-Ethyl-3-methylimidazolium Formate and 1-Ethyl-3-methylimidazolium Acetate

2021

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New experimental data on the thermodynamic properties of imidazolium-based ionic liquids (ILs) and {IL + water} solutions are presented. The isothermal (vapor + liquid) phase equilibrium (VLE) and the density of binary mixtures composed of 1-ethyl-3-methylimidazolium formate, [EMIM]-[HCOO], or 1-ethyl-3-methylimidazolium acetate, [EMIM]-[CH 3 COO], and water are demonstrated. The experimental data were measured at temperatures from 298.15 to 348.15 K over a wide IL mole fraction under ambient pressure. Both ILs were delivered by IoLiTec, and the water content was determined by the Karl−Fischer titration technique. The thermophysical properties of the pure ILs, that is, glass-transition temperature, heat capacity at glass-transition change, and the temperature and enthalpy of melting, were determined by differential scanning calorimetry technique. The VLE has been measured by an ebulliometric method at temperatures from 338.15 to 368.15 K and pressures up to 85 kPa. The experimental VLE data were tested for thermodynamic consistency using the Van Ness test. The nonrandom two-liquid model equation was used to correlate the experimental VLE data. The density of the tested aqueous solution has been measured as a function of IL's mole fraction over a wide temperature range. The empirical equations were applied for density data correlation. From the experimental density data for the {[EMIM][CH 3 COO] (1) + water (2)} system, the excess molar volumes were determined and correlated using the Redlich−Kister equation.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Temperature and Composition Dependence of the Thermodynamic Properties of an Aqueous Solution of 1-Ethyl-3-methylimidazolium Formate and 1-Ethyl-3-methylimidazolium Acetate

2021

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“…Therefore, the activity coefficient (γ 1 ) of the component, in the liquid phase, can be calculated according to Eq. 2 [5,20,21].…”

Section: Application Of Semi-empirical Modelsmentioning

confidence: 99%

Solid–Liquid Phase Equilibria, Molecular Interaction and Microstructural Studies on (N-(2-ethanol)-p-nitroaniline + N-(2-acetoxyethyl)-p-nitroaniline) Binary Mixtures

et al. 2018

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Differential scanning calorimetry (DSC) is used to investigate the thermal properties of N-(2-ethanol)-p-nitroaniline + N-(2-acetoxyethyl)-p-nitroaniline, and their binary systems. The experimental results demonstrate that the studied binary system presents a simple eutectic behavior and the corresponding mole fraction (x eu) of N-(2-ethanol)p-nitroaniline at the eutectic point is 0.5486, whereas the temperature (T eu) is found to be equal to 363.6 K. The quality of the solid-liquid equilibria (SLE) data has been checked by thermodynamic consistency tests, presenting good quality factor. The SLE data have been correlated by means of Wilson, NRTL, and UNIQUAC equations. The three models describe satisfactorily the phase diagram as the root-mean-square deviations for the equilibrium temperatures vary from 1.25 K to 2.07 K. Nevertheless, the Wilson model provides the best correlation results. The three equations have also been used to compute excess thermodynamic functions viz. excess Gibbs energy, enthalpy and entropy. The obtained results revealed a sensitive positive deviation to ideality thus demonstrating the nature of the interactions between the compounds forming the mixture. Microstructural studies have been carried out by FTIR, XRD and optical microscopy showing weak molecular interactions for the eutectic mixture.

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“…The isothermal VLE data for an aqueous solution have been measured by the ebulliometric method within the pressure range of up to p = 85 kPa in a wide composition range. The main part of the apparatus is a specially designed ebulliometer, 21 which is connected to the pressure-stabilizing system comprising the thermostated container with a volume of 50 dm 3 enabling the pressure to be kept constant within 0.1 kPa and dampen the pressure fluctuations caused by the bumping of the liquid boiling in the ebulliometer or by the variation of the temperature of the surroundings. The equilibrium temperature was measured with a resistance thermometer (type P-550, ROTH, Germany) with a precision of 0.01 K. The pressure was measured with a precision of 0.1 kPa using a tensiometric vacuum meter (type CL 300, ZEPWN, Poland).…”

Section: Introductionmentioning

confidence: 99%

New Experimental Data on Thermodynamic Properties of the Aqueous Solution of N,N-Diethyl-N-methylammonium Bromide and N,N-Diethyl-N-methylammonium Methanesulfonate

et al. 2021

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In this work, new experimental data on thermodynamic properties of ionic liquid (IL) aqueous solutions are presented. The (vapor + liquid) phase equilibria, liquid density, and dynamic viscosity of binary mixtures composed of N,N-diethyl-N-methylammonium bromide ([NH,1,2,2][Br]), or N,N-diethyl-N-methylammonium methanesulfonate ([NH,1,2,2][CH3SO3]) and water are presented as functions of temperature and composition. Both ILs were synthesized and specific basic characterization including the NMR spectra and the water content determination was done. The basic thermal properties of the pure IL, including the glass-transition temperature, heat capacity at glass transition, and temperature and enthalpy of (solid + solid) phase transition as well as the temperature and enthalpy of melting were determined using the differential scanning calorimetry (DSC) technique. The isothermal (vapor + liquid) equilibrium (VLE) was measured by the ebulliometric method within a temperature range from T = 338.15 to 368.15 K and pressures up to 85 kPa. Experimental VLE data were successfully correlated using the NRTL equation. The experimental VLE data were tested for thermodynamic consistency using the Van Ness test. The liquid density and the dynamic viscosity were determined as a function of IL’s mole fraction over a wide temperature range. For the correlation of physicochemical properties, empirical equations were applied. From the experimental density data, the excess molar volumes were determined and correlated using the Redlich–Kister-type equation.

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Thermodynamics of binary mixtures of N-methyl-2-pyrrolidinone and ketone. Experimental results and modelling of the (solid+liquid) equilibrium and the (vapour+liquid) equilibrium. The modified UNIFAC (Do) model characterization

Cited by 34 publications

References 40 publications

Temperature and Composition Dependence of the Thermodynamic Properties of an Aqueous Solution of 1-Ethyl-3-methylimidazolium Formate and 1-Ethyl-3-methylimidazolium Acetate

Temperature and Composition Dependence of the Thermodynamic Properties of an Aqueous Solution of 1-Ethyl-3-methylimidazolium Formate and 1-Ethyl-3-methylimidazolium Acetate

Solid–Liquid Phase Equilibria, Molecular Interaction and Microstructural Studies on (N-(2-ethanol)-p-nitroaniline + N-(2-acetoxyethyl)-p-nitroaniline) Binary Mixtures

New Experimental Data on Thermodynamic Properties of the Aqueous Solution of N,N-Diethyl-N-methylammonium Bromide and N,N-Diethyl-N-methylammonium Methanesulfonate

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