Thermodynamics of liquid–vapor phase equilibrium in dimethyl sulfoxide–alkanol systems in the range of 293.15–323.15 K

Abstract

Liquid-vapor phase equilibria in dimethyl sulfoxide-alkanol (1-propanol, 1-butanol, and tertbutanol) binary systems are studied using a static method. The total saturated vapor pressure in the temperature range of 293.15-323.15 K is measured. The partial pressures of dimethyl sulfoxide and alkanes have been calculated via integrating the Gibbs-Duhem equation. Excess molar Gibbs energies are described by the Redlich-Kister equation, and the correlation parameters are calculated. The nature of the deviation from the ideal behavior of these solutions is explained by allowing for the presence of competing homo-and heteromolecular interactions and the considerable effect of the length of the alkanols' hydrocarbon chains has on the values of the thermodynamic parameters.

Vapor-Liquid Equilibrium at Several Experimental Conditions of the Binary Mixtures Methyl Lactate with n-Alkanols

“…The experimental normal boiling points and vapor pressures at T = 323.15 K of pure components, T b and pº, were determined using the same circulating apparatus used for mixtures measurement and they are listed in Table 2 along with some literature data [12,[16][17][18][19][20][21][22][23][24][25][26][27][28].…”

Volumetric Behavior and Vapor–Liquid Equilibrium of Dimethyl Disulfide + n-Alkanol Binary Mixtures

“…In this section, we report data of densities, ρ,at p= 0. The experimental values are given in Table 2 and they are compared with the literature [23][24][25][26][27][28][29][30]. Due to the high number of references for methanol and ethanol, we have chosen for them recommended data from REFPROP (version 9.0) [25].…”