Measurements of vapor-liquid equilibria in the systems NH3-H2O-NaOH and NH3-H2O-KOH at temperatures of 303 and 318 K and pressures 0.1 MPa < p < 1.3 MPa

Authors
Brass, R Pritzel, T Schulte, E Keller, JU
Citation
R. Brass et al., Measurements of vapor-liquid equilibria in the systems NH3-H2O-NaOH and NH3-H2O-KOH at temperatures of 303 and 318 K and pressures 0.1 MPa < p < 1.3 MPa, INT J THERM, 21(4), 2000, pp. 883-898
Citations number
9
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
INTERNATIONAL JOURNAL OF THERMOPHYSICS
ISSN journal
0195928X → ACNP
Volume
21
Issue
4
Year of publication
2000
Pages
883 - 898
Database
ISI
SICI code
0195-928X(200007)21:4<883:MOVEIT>2.0.ZU;2-I
Abstract
A static method has been used to obtain vapor-liquid equilibrium data for t he systems ammonia(NH3)-water (H2O)-potassium hydroxide(KOH) and ammonia-wa ter-sodium hydroxide (NaOH) at temperatures of 303 and 318 K and pressures from 0.1 to 1.3 MPa. The salt concentration in the liquid phase was chosen in the range from 2 to 60 mass% salt in water. In both systems NH3-H2O-NaOH and NH3-H2O-KOH, solid-liquid-vapor equilibria were observed. In the NH3-H 2O-KOH system, liquid-liquid-vapor equilibrium was observed at 318 K and 1. 1 MPa but at yet unknown concentrations of the liquid phases.