A general local composition and coordination number model for square-well fluids with variable well width and diameter ratio

Hu, Jiawen; Duan, Zhenhao; Shi, Xunli; Zhu, Ji

doi:10.1080/00268970701262900

Cited by 3 publications

(1 citation statement)

References 149 publications

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“…( 16) will be is problematic, or it cannot be recognized because the partial differentiation (∂P/∂n i ) T,v c ,n j(j =i) which remarkably enhances the intricacy of integrated function. Necessarily, alternative approaches were taken in recent works 31 . Thus, they were easier than Eq.…”

Section: Compressibility Fugacitymentioning

confidence: 99%

Solubility of vitamin A in supercritical CO2: experimental study and thermodynamic modeling

Naikoo

Zadegan

Pedram

et al. 2021

Sci Rep

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One of the best methods of extracting Vitamin A, as a helper of the immune body system and vision, was measured in supercritical carbon dioxide (SC-CO2); Mole fractions were gained at practical conditions in which the temperature was in the range of 303–323 K and the pressure range was 90–235 bar, respectively. Moreover, four Equation of States [Soave–Redlich–Kwong, Peng–Robinson, Stryjek–Vera and Dashtizadeh–Pazuki–Taghikhani–Ghotbi (DPTG)] were compared with the experimental data. Also, the mixing rules of Van der Waals (vdW1 and vdW2) selected to correlate the solubility data of vitamin A. The outcomes indicate that each of EOSs coupled with vdW2, as a method of estimating the physicochemical and critical properties, were correlated with the solubility data of vitamin A in SC-CO2 with more accuracy, in comparison with vdW1. Among the cubic EOSs, the DPTG model with vdW2 generated the most suitable correlation with the percentage average absolute relative deviation (Average Absolute Relative Deviation%) of 6.

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Section: Compressibility Fugacitymentioning

confidence: 99%

Solubility of vitamin A in supercritical CO2: experimental study and thermodynamic modeling

Naikoo

Zadegan

Pedram

et al. 2021

Sci Rep

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show abstract

Some useful expressions for deriving component fugacity coefficients from mixture fugacity coefficient

Wang

Mao

2008

Fluid Phase Equilibria

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High-order virial coefficients and equation of state for hard sphere and hard disk systems

2009

Phys. Chem. Chem. Phys.

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A very simple and accurate approach is proposed to predict the high-order virial coefficients of hard spheres and hard disks. In the approach, the nth virial coefficient B(n) is expressed as the sum of n(D-1) and a remainder, where D is the spatial dimension of the system. When n > or = 3, the remainders of the virials can be accurately expressed with Padé-type functions of n. The maximum deviations of predicted B(5)-B(10) for the two systems are only 0.0209%-0.0044% and 0.0390%-0.0525%, respectively, which are much better than the numerous existing approaches. The virial equation based on the predicted virials diverges when packing fraction eta = 1. With the predicted virials, the compressibility factors of hard sphere system can be predicted very accurately in the whole stable fluid region, and those in the metastable fluid region can also be well predicted up to eta = 0.545. The compressibility factors of hard disk fluid can be predicted very accurately up to eta = 0.63. The simulated B(7) and B(10) for hard spheres are found to be inconsistent with the other known virials and therefore they are modified as 53.2467 and 105.042, respectively.

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A general local composition and coordination number model for square-well fluids with variable well width and diameter ratio

Cited by 3 publications

References 149 publications

Solubility of vitamin A in supercritical CO2: experimental study and thermodynamic modeling

Solubility of vitamin A in supercritical CO2: experimental study and thermodynamic modeling

Some useful expressions for deriving component fugacity coefficients from mixture fugacity coefficient

High-order virial coefficients and equation of state for hard sphere and hard disk systems

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