Abstract
The solid-liquid phase equilibria of the ternary system KNO3 + KH2PO4 + H2O at the temperatures of 283.15, 298.15, and 313.15 K and the pressure of 0.1 MPa are researched by isothermal solution saturation. The equilibria solid phases are researched by Schreinemakers method (wet residues). The solubility data are determined. Based on these data, the phase diagrams and the crystalline areas are determined. The phase equilibria at different temperatures are compared and discussed. All results can provide basic data support for crystallization and further researches.
Highlights
Salt-water phase equilibria, an important predicting implement to apply for representing the thermodynamic behavior, play a very great guiding role for the relevant process [1, 2]
The data presented are far from enough, so an extensive research at other temperatures needs to be done. e complete phase equilibria data of the KNO3 + KH2PO4 + H2O system at 283.15 K and 313.15 K have not been reported yet. e thesis could help fill in the blank of data in the research, and new experimental data are useful for scholars and engineers to cope with the problem of obtaining and storage of manures containing potassium nitrate and phosphates
The oscillation is stopped and the system is allowed to stand for 3 h to make sure that all the suspended crystals settle. e liquid phase and wet residues are transferred to 250 mL volumetric asks, respectively
Summary
Solid-Liquid Phase Equilibria for the Ternary System KNO3 + KH2PO4 + H2O at 283.15, 298.15, and 313.15 K. e solid-liquid phase equilibria of the ternary system KNO3 + KH2PO4 + H2O at the temperatures of 283.15, 298.15, and 313.15 K and the pressure of 0.1 MPa are researched by isothermal solution saturation. E solid-liquid phase equilibria of the ternary system KNO3 + KH2PO4 + H2O at the temperatures of 283.15, 298.15, and 313.15 K and the pressure of 0.1 MPa are researched by isothermal solution saturation. E equilibria solid phases are researched by Schreinemakers method (wet residues). Based on these data, the phase diagrams and the crystalline areas are determined. All results can provide basic data support for crystallization and further researches
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