Corresponding states. III. Henry's constants for nonpolar binary mixtures

Abstract

A Henry's constant correlation is developed from a macroscopic corresponding states theory for fluid mixtures. The method requires three interaction parameters which are correlated for mixtures of a paraffin with nitrogen, carbon dioxide, hydrogen sulfide, or another paraffin. Henry's constants can be calculated by this method to within experimental accuracy (about 2 5%) for the mixtures tested.

A generalized correlation for Henry's constants in nonpolar binary systems

“…Table 1 summarizes calculated results for a number of the binary mixtures. For comparative purposes, Table 1 also includes calculated results reported by Preston and Prausnitz (1971) and by Gunn et al (1974). As shown in Table 1, our procedure is more accurate than Preston and Prausnitz's procedure and gives similar accuracy to the procedure of Gunn et al which uses three interaction parameters, whereas our procedure requires two characteristic parameters, The overall average deviations for calculated Henry's constants from the proposed method.…”

“…Preston and Prausnitz (1971) have proposed one of the most widely applicable methods using statistical mechanical procedure. Gunn et al (1974) have developed a Henry's constant correlation from a macroscopic corresponding states theory for mixtures. In their work, the thermodynamic properties are calculated from the following relationship:…”

“…Therefore, the last term on the right-hand side of Equation (10) can not be calculated exactly. Therefore, we used the three-parameter correlation of Gunn et al (1974) for the calculation of this term. The constants which are required to calculate the thermodynamic properties are shown in Table 2.…”

Precision Methods for the Determination of the Solubility of Gases in Liquids

“…Extended corresponding states theory (CST) has also been used to develop estimation methods for H 2 , (see for instance Gunn et al 285 and Yorizane and Miyano 286 ). The latter correlation rather successfully includes the solubility behavior of the quantum gases.…”

Activity coefficients and Henry's constants by the pseudocritical method

“…In two cases, binary interaction constants derived from gaseous volumetric data were used to predict values of Henry's constants. Extension to multicomponent systems is indicated.In recent years there has been increasing interest in applying the corresponding states principle and the pseudocritical concept to mixtures in the liquid state (4,5,7,11,12). The conventional approach to liquid solutions has been to rely on activity…”