ISSN:
1572-9567
Keywords:
bromobenzene
;
chlorobenzene
;
high pressure
;
α-methylnaphthalene
;
β-methylnaphthalene
;
solid-liquid phase equilibrium
;
solid solution
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Solid-liquid phase equilibria of the (α-methylnaphthalene + β-methylnaphthalene) and the (chlorobenzene + bromobenzene) systems have been investigated at temperatures from 278 to 343 K and pressures up to 500 MPa using a high-pressure optical vessel. The uncertainties of the measurements of temperature, pressure, and composition were within ±0.1 K, ±0.5 MPa, and ±0.001 mole fraction, respectively. In both systems, the freezing and melting pressures at a constant composition increase almost linearly with increasing temperatures. In the former system, where the two components can form a solid solution with one another to a limit extent, the eutectic point shifts to a higher temperature and to a α-methylnaphthalene-rich composition with increasing pressures. In the latter system, where the two components are completely soluble in each other in the solid phase, the freezing points of all mixtures lie between those of the pure components at each pressure. It is found that the coexistence curves obtained can be expressed by a quadratic equation in pressure.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00500787
Permalink
