Effect of pressure on the solid-liquid phase equilibria of binary organic systems

Conference · Sun Jan 01 04:00:00 EST 1989 · Int. J. Thermophys.; (United States)

OSTI ID:5735670

Nagaoka, K; Makita, T; Nishiguchi, N; Moritoki, M

Solid-liquid phase equilibria of the binary mixtures of the organic liquids have been investigated at temperatures from 278 to 343 K and pressures up to 500 MPa using a high-pressure optical vessel. The systems investigated are as follows: (1) simple eutectic systems-benzene + cyclohexane system and benzene + 2-methyl-2-propanol system; (2) eutectic systems with formation of intermolecular compounds-carbon tetrachloride + p-xylene system and carbon tetrachloride + benzene system; (3) partial solid solution system - /alpha/-methylnapthalene + /beta/-methylnaphthalene system; and (4) complete solid solution system-chlorobenzene + bromobenzene system. The uncertainties of the measurements of temperature, pressure and composition are within /plus minus/0.1 K, /plus minus/ 0.5 MPa, and /plus minus/0.001 mole fraction, respectively. The freezing and melting temperatures at a constant composition increase monotonously with pressure. The eutectic mixture becomes richer in the component whose temperature coefficient of the freezing pressure is larger and the eutectic temperature rises monotonously with increasing pressure in the eutectic systems. The pressure-temperature-composition relation of the solid-phase equilibria can be expressed satisfactorily by an equation newly proposed.

• Research Organization: Kobe Univ. (Japan)
• OSTI ID: 5735670
• Report Number(s): CONF-880606-
• Conference Information: Journal Name: Int. J. Thermophys.; (United States) Journal Volume: 10:1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALCOHOLS
ALKANES
ALKYLATED AROMATICS
AROMATICS
BENZENE
BINARY MIXTURES
BROMINATED AROMATIC HYDROCARBONS
CARBON TETRACHLORIDE
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINATED AROMATIC HYDROCARBONS
CYCLOALKANES
CYCLOHEXANE
DATA COVARIANCES
DIAGRAMS
DISPERSIONS
EQUILIBRIUM
EUTECTICS
FLUIDS
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENATED AROMATIC HYDROCARBONS
HYDROCARBONS
HYDROXY COMPOUNDS
LIQUIDS
MELTING POINTS
MIXTURES
OPTICAL SYSTEMS
ORGANIC BROMINE COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHASE DIAGRAMS
PHASE STUDIES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
PROPANOLS
QUANTITY RATIO
SOLID SOLUTIONS
SOLIDS
SOLUTIONS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VERY HIGH PRESSURE
XYLENE-PARA
XYLENES