Vapor−Liquid Equilibrium Measurements on Three Binary Mixtures:  Difluoromethane/Hydrogen Chloride, <i>cis</i>-1,3-Dichloropropene/<i>trans</i>-1,3-Dichloropropene, and Pyrrole/Water

Wilding, W. Vincent; Adams, Karen L.; Carmichael, Alexander E.; Hull, Jeffery B.; Jarman, Thomas C.; Jenkins, Kathy P.; Marshall, and Tonya L.; Wilson, Howard L.

doi:10.1021/je010290e

Cited by 9 publications

(5 citation statements)

References 3 publications

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“…Despite a constant offset of approximately −0.55%, the data of Washburn et al confirm this trend. Extending the high temperature data into the medium temperature range, some recent data of Giles and Wilson and Wilding et al , exhibit a positive offset with respect to the present equation and the low temperature data. Therefore, none of the data in the medium temperature range were used for the development of the present equation of state.…”

Section: Comparison With Literature Datasupporting

confidence: 53%

Speed of Sound Measurements and a Fundamental Equation of State for Hydrogen Chloride

et al. 2018

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A fundamental equation of state in terms of the Helmholtz energy is presented for hydrogen chloride. Any thermodynamic property can be calculated by combinations of its derivatives with respect to the independent variables temperature and density. The present equation of state is applicable in the entire fluid region. Its accuracy is assessed by comparison with the available experimental literature data from the triple point temperature to 480 K and a maximum pressure of 40 MPa. A reasonable extrapolation behavior beyond these temperature and pressure limits is ensured to allow for an application to mixture models. For the development of the present equation of state, speed of sound measurements are carried out in the liquid and dense vapor phases by means of the pulse-echo technique. Because no speed of sound measurements for this fluid are reported in the literature, the present experimental data set is crucial for the accurate modeling of caloric properties of hydrogen chloride.

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Section: Comparison With Literature Datasupporting

confidence: 53%

Speed of Sound Measurements and a Fundamental Equation of State for Hydrogen Chloride

et al. 2018

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“…Equilibrium compositions were calculated from the measurements of charge composition and total vapor volume at constant temperature and pressure with the Patel-Teja EoS representing both phases. This approach is commonly referred as the PTx method, 8 and we have chosen the PT-EoS because it gives better predictions of molar volume than the Peng-Robinson or Soave-Redlich-Kwong equations. 5 With binary interaction parameters set to 0, we perform a flash calculation at fixed temperature and pressure to get estimates of the liquidand vapor-phase concentrations and density.…”

Section: Experimental Methodsmentioning

confidence: 99%

High-Pressure Vapor−Liquid Equilbria of Some Carbon Dioxide + Organic Binary Systems

et al. 2004

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Vapor−liquid equilibria, molar volumes, and volume expansion for several binary mixtures of organic solvents with carbon dioxide have been determined using a visual synthetic technique at temperatures from (298 to 333) K. The binary vapor−liquid equilibrium and saturated liquid molar volume of CO2 + acetone, + acetonitrile, + dichloromethane, + nitromethane, + N-methyl-2-pyrrolidone, + perfluorohexane, + 2-propanol, + tetrahydrofuran, + toluene, and + 2,2,2-trifluoroethanol were measured at temperatures from (298.2 to 333.2) K. The VLE correlated well using the Patel−Teja equation of state with Mathias−Klotz−Prausnitz mixing rules. The solubility of CO2 in the various solvents is explained by considering the intermolecular interactions of CO2 in solution.

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“…The experimental solid−liquid phase equilibria (SLE) and liquid−liquid phase equilibria (LLE) measurements of model compound as pyrrole are essential to process design and optimization. Pyrrole has unique physical and chemical properties and is used in the many laboratories as an entrainer in different chemical and manufacturing extracting processes. – The immiscibility of pyrrole with water makes this compound ready to use in extraction processes from water . The knowledge about density, excess molar volumes, or enthalpies and thermodynamic properties including phase equilibria is necessary to design any process involving pyrrole on an industrial scale .…”

Section: Introductionmentioning

confidence: 99%

“…Pyrrole has unique physical and chemical properties and is used in the many laboratories as an entrainer in different chemical and manufacturing extracting processes. – The immiscibility of pyrrole with water makes this compound ready to use in extraction processes from water . The knowledge about density, excess molar volumes, or enthalpies and thermodynamic properties including phase equilibria is necessary to design any process involving pyrrole on an industrial scale . Monte Carlo simulations were carried out to compute the vapor−liquid equilibria (VLE) of pyrrole between other aromatic compounds .…”

Section: Introductionmentioning

confidence: 99%

“…1 The knowledge about density, excess molar volumes, or enthalpies and thermodynamic properties including phase equilibria is necessary to design any process involving pyrrole on an industrial scale. 1 Monte Carlo simulations were carried out to compute the vapor-liquid equilibria (VLE) of pyrrole between other aromatic compounds. 2 High-pressure phase equilibria of pyrrole with carbon dioxide was measured as an important compound in the enzymatic reactions.…”

Section: Introductionmentioning

confidence: 99%

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Phase Equilibria of (Pyrrole + Benzene, Cyclohexane, and Hexane) and Density of (Pyrrole + Benzene and Cyclohexane) Binary Systems

Domańska

Zawadzki

2010

J. Chem. Eng. Data

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The phase diagrams of pyrrole with benzene, cyclohexane, and hexane have been measured at ambient pressure by a dynamic method in a range of temperatures from (240 to 315) K. The simple eutectic system was observed with complete miscibility in the liquid phase for benzene. An immiscibility gap has been observed in the systems of {pyrrole (1) + cyclohexane or hexane (2)}. The upper critical solution temperatures (UCSTs) were observed for these two systems at (285.2 and 314.2) K for cyclohexane and hexane, respectively. The diagrams of phase equilibria have been correlated using the Wilson and the nonrandom two-liquid (NRTL) equation. The isothermal densities of pyrrole as a function of pressure was measured. Densities and excess molar volumes, V m E have been determined for pyrrole with benzene and cyclohexane over temperature range (298.15 to 338.15) K and ambient pressure. The densities of {pyrrole (1) + hexane (2)} mixture was not determined because of the problem of two phases up to 314.2 K. The temperature and composition dependences were described by linear or polynomial correlation. Excess molar volumes were calculated and correlated by the Redlich-Kister polynomial expansion. These systems exhibit negative excess molar volumes, V m E . Volume expansivity, R, and excess volume expansivity, R E , were described in functions of temperature and composition. Our experimental data of V m E were used for the description of the excess molar enthalpy, H m E , for these systems with the Prigogine-Flory-Paterson (PFP) model. Negative V m E and H m E observed in these systems are probably attributed to the π-π interactions between the aromatic rings of pyrrole and benzene for the {pyrrole (1) + benzene (2)} mixture and by the high packing effects for the {pyrrole (1) + cyclohexane (2)} mixture. † Part of the "Workshop in Memory of Henry V. Kehiaian".

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Vapor−Liquid Equilibrium Measurements on Three Binary Mixtures: Difluoromethane/Hydrogen Chloride, cis-1,3-Dichloropropene/trans-1,3-Dichloropropene, and Pyrrole/Water

Cited by 9 publications

References 3 publications

Speed of Sound Measurements and a Fundamental Equation of State for Hydrogen Chloride

Speed of Sound Measurements and a Fundamental Equation of State for Hydrogen Chloride

High-Pressure Vapor−Liquid Equilbria of Some Carbon Dioxide + Organic Binary Systems

Phase Equilibria of (Pyrrole + Benzene, Cyclohexane, and Hexane) and Density of (Pyrrole + Benzene and Cyclohexane) Binary Systems

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