Topological transformation of a phase diagram for the sodium nitrate-water-isopropanol ternary system |
| |
Authors: | D G Cherkasov K K Il’in V F Kurskii |
| |
Institution: | 1.Saratov State University,Saratov,Russia |
| |
Abstract: | Phase equilibria and critical phenomena in the sodium nitrate-water-isopropanol ternary system, where a boundary binary liquid
system shows no immiscibility over the entire temperature range of its liquid state, were studied in the range from 5 to 90°C
using a visual polythermal method. The formation temperature of a monotectic critical tie-line was determined to be 6.1°C,
and the solution compositions corresponding to critical solution points at various temperatures were determined. Isopropanol
partition coefficients between the aqueous and organic phases of monotectic equilibrium were calculated for seven temperatures.
The isopropanol salting out from aqueous solutions by sodium nitrate was shown to be enhanced by rising temperature. Isothermal
phase diagrams of the title system were constructed to verify a fragment of the general scheme of topological transformations
of phase diagrams for salt-binary solvent ternary systems with salting out. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |