Solubility of Gases in Binary Liquid Mixtures:  An Experimental and Theoretical Study of the System Noble Gas + Trifluoroethanol + Water

Abstract

Solubilities of noble gases (He, Ne, Ar, Kr, and Xe) in mixtures of water + 2,2,2-trifluoroethanol (TFE) at 298.15 K and 101.33 kPa partial pressure of gas are reported. Our procedure for the estimation of these solubilities from the experimental data is described in detail. From these data, the Henry's constants at the vapor pressure of water (the least volatile component), the standard changes in the Gibbs energy for both the solution process and the solvation process, and the so-called excess Henry's constant are calculated. Finally, three prediction methods are applied, and their results are compared and discussed.

Volumetric properties of binary and ternary mixtures of diisopropyl ether, α,α,α-trifluorotoluene, 2,2,2-trifluoroethanol, and ethanol at a temperature 298.15K and pressure 101kPa

“…2,2,2-Trifuoroethanol (commercially called fluorinol) is reported as an effective solvent in bioengineering [1][2][3][4][5], for catalytic-polymerization reactions, and for noble and nonpolar gases [6][7][8].…”

Solubility of methane in water and in a medium for the cultivation of methanotrophs bacteria

“…Since the medium is a very dilute aqueous solution, there is no appreciable change in the thermodynamic properties from those calculated for the pure water. Furthermore, the scaled particle theory [1,3,[13][14][15][16][17] was applied to the prediction of the Henry coefficients of methane in water. The calculations were performed using the equations proposed by this theory, the molecular parameters for methane and water presented in table 5, namely the effective Lennard-Jones molecular parameters, e and r, the polarizability, a, and permanent dipole moment, l, of these compounds [13,22,35,36].…”

“…More recently, Mainar et al [17] applied this theory to the solubility of gases in binary liquid mixtures. In our work, the experimental Henry coefficients of methane in water are also compared with those predicted by this theory.…”

Solubility of gases in fluoroorganic alcohols. Part III. Solubilities of several non-polar gases in water + 1,1,1,3,3,3-hexafluoropropan-2-ol at 298.15 K and 101.33 kPa

“…For example, solubilities provide information about the solvophobicity of the liquid solvent [1] and also allow an estimation of certain molecular parameters of the solvent, such as those of the Lennard-Jones potential [2]. For this reason, our research group has focused on measuring the solubility of a wide set of nonpolar gases (He, Ne, Ar, Kr, Xe, H 2 , N 2 , O 2 , CH 4 , C 2 H 6 , C 2 H 4 , CF 4 , SF 6 , and CO 2 ) in two fluoroorganic alcohols, namely, 2,2,2-trifluorethanol (TFE) and 1,1,1,3,3,3-hexafluoropropan-2-ol (HFIP) [3][4][5] as well as in mixtures of water and TFE [6,7] and has also reported the solubility of noble gases in mixtures of water and HFIP [8].…”

“…Then, this paper is aimed to complete the previous studies of solubilities of gases in mixtures of water and fluoroalcohol. Here we report the solubilities, expressed as mole fraction of gas dissolved and also as Henry's constant, of the non-polar gases H 2 , N 2 , O 2 , CH 4 , C 2 H 6 , C 2 H 4 , CF 4 , SF 6 , and CO 2 in the mixture (water + HFIP) at a temperature of 298.15 K and 101.33 kPa partial pressure of gas. The ratio of fluoroorganic alcohol in the mixtures covers a range between 10 and 90 per cent in volume.…”