Phase Equilibria and Thermodynamic Properties in the Oxalic Acid–Citric Acid–Water System

Luo, Y.; Novikov, A.A.; Kurdakova, S.V.; Belova, E.V.; Uspenskaya, I.A.

Информация о цитировании статьи получена из Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 23 января 2026 г.

Авторы: Luo Yongxu, Novikov A.A., Kurdakova S.V., Belova E.V., Uspenskaya I.A.
Журнал: Russian Journal of Physical Chemistry A
Том: 99
Номер: 11
Год издания: 2025
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 2611
Последняя страница: 2620
DOI: 10.1134/S0036024425702103
Аннотация: The liquid–solid and liquid–vapor phase equilibria in the oxalic acid (H2Ox)–citric acid (H3Cit)–water system at a temperature of 298.15 K (25°C) and 298.15–308.15 K, respectively, are studied. The stability regions of the H3Cit⋅H2O and H2Ox⋅2H2O crystalline hydrates are determined. Experimental data on water activity for solutions of the oxalic acid–citric acid–water ternary system are obtained; the saturated vapor pressure above solutions of the H3Cit–H2Ox–H2O system is measured by the static method; water activity is determined by the dew point method. It is shown that water activity depends on temperature only slightly in a temperature range of 298.15–308.15 K. The solubility products of H3Cit⋅H2O and H2Ox⋅2H2O are calculated using the Pitzer model. A model that describes the thermodynamic properties of solution and phase equilibria in the H3Cit–H2Ox–H2O ternary system with an accuracy that is not inferior to the experimental accuracy is developed.
Добавил в систему: Курдакова Светлана Владимировна

	ИСТИНА	Войти в систему Регистрация
	ИСТИНА ПсковГУ
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ИСТИНА ПсковГУ

Phase Equilibria and Thermodynamic Properties in the Oxalic Acid–Citric Acid–Water Systemстатья

Прикрепленные файлы