On the Thermodynamics of Solutions. IX. Critical Properties of Mixtures and the Equation of Benedict, Webb, and Rubin

Ackerman, F.J.; Redlich, O.

doi:10.1063/1.1733582

Cited by 12 publications

(4 citation statements)

References 15 publications

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“…For a binary mixture, Redlich and coworkers [76][77] found that along the critical line, the limiting slopes at the critical points of two pure components can be explicitly derived from the critical criteria, as shown in Appendix B. They obtained fairly good results using classical EOS such as those by RedlichKwong and Benedict-Webb-Rubin.…”

mentioning

confidence: 99%

Critical temperatures and pressures for hydrocarbon mixtures from an equation of state with renormalization-group theory corrections

Jiang

Prausnitz

2000

Fluid Phase Equilibria

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mentioning

confidence: 99%

Critical temperatures and pressures for hydrocarbon mixtures from an equation of state with renormalization-group theory corrections

Jiang

Prausnitz

2000

Fluid Phase Equilibria

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“…They may be very useful in representing data within a limited range of observation. Beyond this range great caution is advisable (Ackerman and Redlich, 1963).…”

Section: Resultsmentioning

confidence: 99%

On the Three-Parameter Representation of the Equation of State

Redlich¹

1975

Ind. Eng. Chem. Fund.

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Almost all small, nonpolar molecules satisfy the. theorem of corresponding states; their P-V-T-relation is quite"well represented by a two-parameter equation proposed in 1949. A third individual parameter is known to be required for long chains and polar molecules. The quality of the three-parameter representation has been examined by means of an equation.of state based solely on the critical constants. The equation is reasonably convenient for practical applications, including the derivation of the fugacity coefficient. Mean de,•iations for 13 widely different substances confirm a fairly satisfactory algebraic representati.:m l:ly three individual parameters. A few exceptions, such as water, hydrogen and helium, are well known.

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“…Several authors (1,14,17,19,21,22,34,36,44,45,63,64) have reported correlations of the critical temperature or critical pressure of mixtures but these, by and large, have been confined to a particular chemical c l a s s of substances (usually paraffins). Very little work has been reported on the correlation of critical volumes cf mixtures (22).…”

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Vapor‐liquid equilibria at high pressures: Calculation of critical temperatures, volumes, and pressures of nonpolar mixtures

1967

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An analysis of c r i t i c o l doto far a large number o f binary mixtures of normal fluids shows that the c r i t i c a l temperature and the c r i t i c a l volume con each be expressed as quodratic functions o f the surface froction. Eoch of these functions requires one adiustable parameter characteristic o f the binary pair; for any family of chemical components, these parameters, upon suitable reduction, follow definite trends.It was shown that the surface fraction gives much better correlation than any other size-weighted variable. F o r the c r i t i c a l pressure, however, no quodrotic function wos adequate. T o calculate c r i t i c a l pressures, the correlations for critical temperature ond c r i t i c a l volume were used i n conjunction with o slightly altered version of the Redlich-Kwong equation.Generolizotions to systems containing more than two components follow without addition01 assumptions. The methods presented i n this paper provide good estimates for c r i t i c a l constonts of multicomponent mixtures. These ore porticularly useful for onolyzing and correlating vapor-liquid equilibria i n the c r i t i c o l region.The critical properties of pure fluids have received much work. The critical properties of mixtures, however, are not attention and as a result of much experimental work, dating known nearly as well, although experimental d a t a are availback nearly 100 years (3, 6 ) , a s well a s semiempirical cor-able for a surprisingly large number of binary mixtures (58).relations (561, i t is now possible to make good estimates Critical properties of mixtures are required in petroleum of the critical temperature, pressure, and volume of most and natural g a s engineering and for rational design of seppure fluids encountered in typical chemical engineering aration equipment and chemical reactors at high pressures.

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On the Thermodynamics of Solutions. IX. Critical Properties of Mixtures and the Equation of Benedict, Webb, and Rubin

Abstract: Values for the critical properties of gaseous mixtures derived from the equation of Benedict, Webb, and Rubin are not consistently better than those obtained from the equation of Redlich and Kwong.

Cited by 12 publications

References 15 publications

Critical temperatures and pressures for hydrocarbon mixtures from an equation of state with renormalization-group theory corrections

Critical temperatures and pressures for hydrocarbon mixtures from an equation of state with renormalization-group theory corrections

On the Three-Parameter Representation of the Equation of State

Vapor‐liquid equilibria at high pressures: Calculation of critical temperatures, volumes, and pressures of nonpolar mixtures

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