Thermodynamic Properties of Solutions in the H2O–Na2SO4–Al2(SO4)3 System

• Published in: Russian journal of inorganic chemistry Vol. 68; no. 2; pp. 195 - 201
• Main Authors: Nesterov, A. V., Demchenko, A. M., Potashnikov, A. A., Voskov, A. L., Kovalenko, N. A., Uspenskaya, I. A.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-02-2023; Springer Nature B.V
• Subjects: Aluminum sulfate; Chemistry; Chemistry and Materials Science; Dew point method; Inorganic Chemistry; Physicochemical Analysis of Inorganic Systems; Thermodynamic properties; Vapor pressure; electrolyte solutions; aluminum sulfate; water activity; sodium sulfate; thermodynamic modeling; Pitzer–Simonson–Clegg model
• ISSN: 0036-0236; 1531-8613
• DOI: 10.1134/S0036023622700164

The vapor pressure in the H
2
O–Na
2
SO
4
–Al
2
(SO
4
)
3
system at 15, 25, and 35°C was measured by a static method. The vapor pressure in the H
2
O–Al
2
(SO
4
)
3
and H
2
O–Na
2
SO
4
–Al
2
(SO
4
)
3
systems at 25 and 50°C was measured by the dew point method. A set of parameters of the Pitzer–Simonson–Clegg (PSC) model was determined to describe adequately vapor– liquid equilibria in the H
2
O–Al
2
(SO
4
)
3
and H
2
O–Na
2
SO
4
–Al
2
(SO
4
)
3
systems in the temperature range from 15 to 50°С.