Density and isothermal compressibility of ionic liquids from perturbed hard-sphere chain equation of state

Hosseini, Sayed Mostafa; Papari, Mohammad Mehdi; Moghadasi, Jalil

doi:10.1016/j.molliq.2012.07.007

Cited by 15 publications

(2 citation statements)

References 46 publications

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“…Sharafi et al employed the PHSC EOS to calculate the densities of R32-R134a mixtures and the absolute average deviation (AAD) was 1.08%; 9 Hosseini et al applied the PHSC EOS to model the density of ionic liquids and obtained an AAD of 0.24%. 10 Further more, Valavi et al used the PHSC EOS to predict the density of an acid and peptide solution with an AAD of 0.38%. 11 Later, Zhang et al improved the PHSC EOS to predict the densities of the CO 2 + dodecane system, yielding an AAD of 0.52%.…”

Section: Introductionmentioning

confidence: 99%

Density and Volumetric Behavior of CO₂ + Undecane System from 313.15 to 353.15 K and Pressures up to 19 MPa

et al. 2016

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Densities of compressed CO2 + undecane binary mixtures were measured using a magnetic suspension balance (MSB). Measurements were made at temperatures ranging from 313.15 to 353.15 K and pressures ranging from 8 to 19 MPa at CO2 mole fractions (x 1) of 0, 0.2483, 0.4641, 0.6797, and 0.8874. The mixture densities were found to increase linearly with pressure and decrease with temperature; this behavior is similar to that of CO2 + decane or dodecane mixtures. The mixture densities show a crossover with composition when the CO2 mole fraction is high. The densities of alkanes increase almost linearly with carbon number, as do the densities of CO2 + alkane mixtures. With the of CO2 mole fraction, the mixture densities increase at first, then decrease. The increase of pressure makes the excess molar volume less negative, whereas the increase of temperature makes it more negative. Densities calculated from the perturbed hard chain equation of state (PHSC EOS) with improved parameters are in good agreement with the experimental densities. Adopting the constant binary interaction parameter k ij for different alkanes in the PHSC EOS slightly enlarge the model deviation but simplifies the calculation.

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Section: Introductionmentioning

confidence: 99%

Density and Volumetric Behavior of CO₂ + Undecane System from 313.15 to 353.15 K and Pressures up to 19 MPa

et al. 2016

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“…Also, they predicted the volumetric properties of ILs using Ihm-Song-Mason (ISM) [10] and Tao-Mason [11] equations of state. Hosseini et al [12] have assessed the role of harddimers to present an alternative perturbed hard chain (PHC) EOS for ILs. The performance of the perturbed hard-dimer chain (PHDC) model has also been checked for density of ILs.…”

Section: Introductionmentioning

confidence: 99%

Thermophysical properties of ionic liquids and their mixtures from a new equation of state

Akbari

Alavianmehr

Ardakani

et al. 2017

Ionics

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In our previous work, a perturbed hard-trimersphere equation of state (PHTS EOS) was developed for modeling the phase equilibria of pure ionic liquids (ILs) (M.M. Alavianmehr et al., Ionics 22 (2016) 2447-2459. In this work, we have successfully extended the model to the mixtures of IL + IL and IL + solvent. Two temperaturedependent parameters appearing in the EOS are correlated with two microscopic scaling constants σ, the effective hardsphere diameter, and ε, the non-bonded interaction energy. The overall average absolute deviation (AAD) of the estimated densities from the literature data using the proposed model with and without non-additivity parameter (λ ij ) was found to be 0.44 and 0.79%, respectively. A modified Enskog equation and rough hard-sphere (RHS) theory are combined with our proposed equation of state to calculate the viscosity coefficient of ionic liquids and their mixtures. Finally, from the results obtained, a linear relation between logarithm of surface tension and viscosity property of ionic liquid was developed.

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Densities of Pure Ionic Liquids and Mixtures: Modeling and Data Analysis

Abildskov¹,

O’Connell

2015

J Solution Chem

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Density and isothermal compressibility of ionic liquids from perturbed hard-sphere chain equation of state

Cited by 15 publications

References 46 publications

Density and Volumetric Behavior of CO₂ + Undecane System from 313.15 to 353.15 K and Pressures up to 19 MPa

Density and Volumetric Behavior of CO₂ + Undecane System from 313.15 to 353.15 K and Pressures up to 19 MPa

Thermophysical properties of ionic liquids and their mixtures from a new equation of state

Densities of Pure Ionic Liquids and Mixtures: Modeling and Data Analysis

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Density and isothermal compressibility of ionic liquids from perturbed hard-sphere chain equation of state

Cited by 15 publications

References 46 publications

Density and Volumetric Behavior of CO2 + Undecane System from 313.15 to 353.15 K and Pressures up to 19 MPa

Density and Volumetric Behavior of CO2 + Undecane System from 313.15 to 353.15 K and Pressures up to 19 MPa

Thermophysical properties of ionic liquids and their mixtures from a new equation of state

Densities of Pure Ionic Liquids and Mixtures: Modeling and Data Analysis

Contact Info

Product

Resources

About

Density and Volumetric Behavior of CO₂ + Undecane System from 313.15 to 353.15 K and Pressures up to 19 MPa

Density and Volumetric Behavior of CO₂ + Undecane System from 313.15 to 353.15 K and Pressures up to 19 MPa