Three-phase critical point in hydrocarbon-water systems

The mutual solubility and related liquid-liquid equilibria of C8H12–C8H18 hydrocarbons with water are exhaustively and critically reviewed. Reports of experimental determinations of solubility in 20 chemically distinct binary systems that appeared in the primary literature prior to end of 2002 are compiled. For 5 systems sufficient data are available to allow critical evaluation. All data are expressed as mass percent and mole fraction as well as the originally reported units. In addition to the standard evaluation criteria used throughout the Solubility Data Series, a new method based on the evaluation of the all experimental data for a given homologous series of aliphatic and aromatic hydrocarbons was used.

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“…The data reported by Roof,16 and Scott and van Konynenburg, 17 lack sufficient information to justify evaluation.…”

Section: Rejected and Inaccessible Datamentioning

confidence: 99%

IUPAC-NIST Solubility Data Series. 81. Hydrocarbons with Water and Seawater Revised and Updated. Part 7. C8H12–C8H18 Hydrocarbons with Water

Góral

Wiśniewska-Gocłowska

Skrzecz

et al. 2005

Journal of Physical and Chemical Reference Data

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“…At 473 and 523 K, which are below the three-phase critical end point temperature, 543 K, 21 the densities increase slightly with increasing pressure. At higher temperatures, on the contrary, the densities make a significant increase, and show the steepest rise at 548 K in the lower pressure range, which is near the three-phase critical end point.…”

Section: Discussionmentioning

confidence: 94%

Infrared study of anomalous volume behavior of water–benzene mixtures in the vicinity of the critical region

Furutaka

Ikawa

2002

The Journal of Chemical Physics

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Volume behavior of water–benzene mixtures at temperatures and pressures in the 473–623 K and 100–350 bar ranges, respectively, has been studied by infrared in situ measurements. The densities of the benzene-rich phase were estimated from the spectroscopically determined concentrations of water and benzene and compared with the average densities before mixing, which were calculated using literature densities of neat water and neat benzene at the same temperature and pressure. Anomalously large volume change for mixing has been found in the vicinity of the critical region of the water–benzene mixtures.

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“…The capsule is then frozen (in liquid nitrogen), evacuated and sealed. A setup with the transparent cylinder (quartz or sapphire tube) (Rebert and Kay, 1959;Roof, 1970;Aftienjew and Zawisza, 1977;De Loos et al, 1980;Huang et al, 1985;Dandge et al, 1985;Ng et al, 1985, etc. ) is loaded in the same manner as the metallic autoclaves.…”

Section: Methods Of Visual Observationmentioning

confidence: 99%

Phase Equilibria in Binary and Ternary Hydrothermal Systems

Valyashko¹

2008

Hydrothermal Experimental Data

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Three-phase critical point in hydrocarbon-water systems

Cited by 55 publications

References 6 publications

IUPAC-NIST Solubility Data Series. 81. Hydrocarbons with Water and Seawater Revised and Updated. Part 7. C8H12–C8H18 Hydrocarbons with Water

IUPAC-NIST Solubility Data Series. 81. Hydrocarbons with Water and Seawater Revised and Updated. Part 7. C8H12–C8H18 Hydrocarbons with Water

Infrared study of anomalous volume behavior of water–benzene mixtures in the vicinity of the critical region

Phase Equilibria in Binary and Ternary Hydrothermal Systems

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