Theoretical prediction of phase behaviour at high temperatures and pressures for non-polar mixtures. Part 2.—Gas–gas immiscibility

Hurle, Robert L.; Jones, F.O.; Young, Colin L.

doi:10.1039/f29777300613

Cited by 15 publications

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“…Table 1 lists the results, i.e., the appropriate value of Tg2/T~1 for fixed values of vg 2 / V~l between 0_7 and 4 .5 . As a matter of interest the overlapping results of Hicks and Young [24] are included. The results are perhaps clearer when shown in figure 1.…”

Section: Resultsmentioning

confidence: 99%

On the calculation of critical liquid-vapor lines of binary mixtures

Wielopolski¹

1980

J. RES. NATL. BUR. STAN.

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The critica l lin es of binary mixtures of conforma l fluid s are ca lculated on th e basis of th e one-fluid Van der Waal s theory. The co nditi ons for the existence of th e gas/ gas equi librium of the first and second type are s hown and di scussed. The ana lyti ca l exp ressions for partial derivatives of G ibbs free e ne rgy with respect to concentra ti on , up to the third order, are given in th e appendix.Key word s: Co nforma l so luti on th eo ry; corres ponding states; c ritical poi nt; gas/gas eq ui libria; mixtures; Van d e r Waal s one fluid model.

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Section: Resultsmentioning

confidence: 99%

On the calculation of critical liquid-vapor lines of binary mixtures

Wielopolski¹

1980

J. RES. NATL. BUR. STAN.

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“…Fortunately, theory can help to predict the phase behavior of mixtures. A report from 1977 describes the utilization of Guggenheim and van der Waals equations of state to predict gas–gas immiscibility . In addition, a look in the literature reports will be an excellent starting point to evaluate the applicability of other CO 2 modifiers.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Unified chromatography: Fundamentals, instrumentation and applications†

Silva

Andrade

Fumes

et al. 2015

J of Separation Science

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The concept of unified chromatography has been in existence for 50 years after the work of Giddings proposing that all modes of chromatography (gas chromatography, liquid chromatography, supercritical fluid chromatography and so on) may be treated together under a single unified theory. His idea was partially fulfilled 23 years later by Ishii, Takeuchi and colleagues, who demonstrated for the first time the possibility to analyze a complex sample containing substances with a wide range of boiling points and polarities in the same instrument and column, just by varying the mobile phase pressure and temperature to change from one chromatographic mode to another. This approach has been demonstrated through application to the separation of complex mixtures in several areas including crude oil, edible oils and polymers. Still, unified chromatography has not yet been fully developed. In the present work, we will review the fundamentals, instrumentation and several applications of the technique. Also discussed are the drawbacks that still hinder development, as well as the recent developments and trends in instrumentation and columns that suggest the most feasible ways forward to the full development of unified chromatography.

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“…with van der Waals's prescription for a(x) and b(x): 2 2 a (1 -x) aAA + 2x(l -x)aAB X aBB, (2) b = (1 -x)2bAA + 2x(l -x)bAB + XbBB, (3) and with the "combining rules": Among others who have calculated phase diagrams are van Konynenburg and Scott (22) and Young and his colleagues (27,28) …”

Section: The Simplest Kind Of Phase Diagrammentioning

confidence: 99%

Phase equilibria in fluid mixtures

McGlashan¹

1985

Pure and Applied Chemistry

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-Phase diagrams for binary fluid mixtures are reviewed with respect to experimental methods used for their study; the kinds of phase diagram obtained in practice, especially those including one or more of azeotropy, the coexistence of three fluid phases, and the coexistence of two fluid phases ("gas-gas immiscibility") at temperatures above the critical temperature of either pure component; and the extent to which modern theoretical treatments can be used to predict what actually happens at different pressures, temperatures, and compositions.

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Theoretical prediction of phase behaviour at high temperatures and pressures for non-polar mixtures. Part 2.—Gas–gas immiscibility

Abstract: An attempt has been made to predict gas-gas immiscibility using the Guggenheim and van der Walls equations of state. The stability conditions have been solved, using a digital computer, for * Ref. (l), section 8.5.Ref. (l), section 8.4.

Cited by 15 publications

References 0 publications

On the calculation of critical liquid-vapor lines of binary mixtures

On the calculation of critical liquid-vapor lines of binary mixtures

Unified chromatography: Fundamentals, instrumentation and applications†

Phase equilibria in fluid mixtures

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