TY - JOUR
T1 - Some thermophysical properties of methanol and aqueous methanol mixtures at sub- and supercritical conditions
AU - Marcus, Yizhak
N1 - Publisher Copyright:
© 2016
PY - 2017/8
Y1 - 2017/8
N2 - Expressions for the composition dependence of the critical constants of mixtures or water and methanol are presented as are expressions of the vapor pressure, the molar enthalpy of vaporization, and the molar volume of methanol along its saturation curve. The internal pressure of saturated methanol is compared with it cohesive energy density, reflecting the diminishing strength of its intermolecular hydrogen bonding as the temperature is increased. Thermophysical properties (molar volumes, isobaric expansibilities, isothermal compressibilities, and internal pressures) of mixtures of methanol and water at subcritical temperatures at saturation and at the fixed pressures of 7 and 20 MPa have been calculated and are presented in a table. The self- and mutual association of water and methanol in their mixtures at sub-critical temperatures is examined.
AB - Expressions for the composition dependence of the critical constants of mixtures or water and methanol are presented as are expressions of the vapor pressure, the molar enthalpy of vaporization, and the molar volume of methanol along its saturation curve. The internal pressure of saturated methanol is compared with it cohesive energy density, reflecting the diminishing strength of its intermolecular hydrogen bonding as the temperature is increased. Thermophysical properties (molar volumes, isobaric expansibilities, isothermal compressibilities, and internal pressures) of mixtures of methanol and water at subcritical temperatures at saturation and at the fixed pressures of 7 and 20 MPa have been calculated and are presented in a table. The self- and mutual association of water and methanol in their mixtures at sub-critical temperatures is examined.
KW - Cohesive energy density
KW - Critical constants
KW - Hydrogen bonding
KW - Internal pressure
KW - Methanol
KW - Mixtures of methanol and water
KW - Water
UR - http://www.scopus.com/inward/record.url?scp=84995639882&partnerID=8YFLogxK
U2 - 10.1016/j.molliq.2016.07.049
DO - 10.1016/j.molliq.2016.07.049
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AN - SCOPUS:84995639882
SN - 0167-7322
VL - 239
SP - 10
EP - 13
JO - Journal of Molecular Liquids
JF - Journal of Molecular Liquids
ER -