High-pressure densities and derived volumetric properties (excess and partial molar volumes, vapor-pressures) of binary methanol+ethanol mixtures

Investigation of volumetric fluid properties of (heptane + hexadecane) at reservoir conditions

“…The excess molar volumes of the mixtures were calculated using Equation (9) (Abdulagatov et al, 2008). 4)) and experimental literature data (Outcalt et al, 2010;Dymond et al, 1979;Banipal et al, 1991).…”

“…where x is the mole fraction of heptane, V m (p, T, x) is the experimentally measured molar volume of a mixture of composition x at temperature T and pressure p, and V 1 ¼ V m (p, T, 1) and V 2 ¼ V m (p, T, 0) are the molar volumes of the pure components (heptane and hexadecane, respectively) at the same pressure and temperature (Abdulagatov et al, 2008). For deriving the partial molar volumes of the components in the mixture, a relation of excess molar volume as a function of composition is required.…”

Vapour Pressure of Ethanol and 1-Propanol Binary Mixtures

“…This work is a continuation of our previous publications in the field of thermophysical properties of alcohol and their solutions [3][4][5][6]. Hereby, the vapour pressure of binary solutions of (1-x) C 2 H 5 OH + x C 3 H 7 OH were investigated.…”

CHAPTER 7. Excess Volumes of Liquid Nonelectrolyte Mixtures

“…In particular, the excess molar volumes of {methanol (MeOH) þ ethanol (EtOH)} and of {ethanol þ propanol} are very small and thus definitely present a challenge for the determination via densities determined by vibrating-tube densimetry. 327 For equimolar composition, for the former system V E (x MeOH ¼ 0.5) ¼ 0.0085 cm 3 mol À1 with a standard deviation of the Redlich-Kister fit of 2.2Â10 À4 cm 3 mol À1 , while for the latter system V E (x EtOH ¼ 0.5) ¼ 0.0084 cm 3 mol À1 with a standard deviation of the RedlichKister fit of 1.3Â10 À4 cm 3 mol À1 . Empirical application of the Flory theory 266 provided a useful semiquantitative correlation between the excess volumes and the excess enthalpies of these mixtures with hydrogen bonds.…”