Phase Equilibria in H2O–CH3SO3H System: Experiment and Thermodynamic Modeling

E. V. Belova; Белова Е. В.; A. S. Kapelushnikov; Капелюшников А. С.; A. L. Voskov; Восков А. Л.

doi:10.31857/S0044453723070038

Phase Equilibria in H2O–CH3SO3H System: Experiment and Thermodynamic Modeling

Authors: Belova E.V.¹, Kapelushnikov A.S.², Voskov A.L.¹
Affiliations:
1. Department of Chemistry, Moscow State University, Moscow, Russia
2. Materials Science Department, Moscow State University
Issue: Vol 97, No 7 (2023)
Pages: 925-931
Section: ХИМИЧЕСКАЯ ТЕРМОДИНАМИКА И ТЕРМОХИМИЯ
Submitted: 27.02.2025
Published: 01.07.2023
URL: https://rjonco.com/0044-4537/article/view/668692
DOI: https://doi.org/10.31857/S0044453723070038
EDN: https://elibrary.ru/SJXSBT
ID: 668692

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Abstract

Water activities in H2O–CH3SO3H system were obtained by the dew point method and by the static method of a vapor pressure measurement in a temperature range 288.15–323.15 K. Pitzer–Simonson–Clegg model parameters were calculated. The parameters describe adequately properties of a liquid phase in a temperature range 198.15–323.15 К and with an acid concentration up to 80 wt %. Stability parameters were determined for two solid phases, HMS·H2O and HMS·3H2O (HMS = CH3SO3H).

Keywords

methanesulfonic acid, Pitzer–Simonson–Clegg model, static method of a vapor pressure, measurement dew point method, phase diagram

About the authors

E. V. Belova

Department of Chemistry, Moscow State University, Moscow, Russia

Email: catrine2@mail.ru
Moscow, Russia

A. S. Kapelushnikov

Materials Science Department, Moscow State University

Email: catrine2@mail.ru
Moscow, Russia

A. L. Voskov

Department of Chemistry, Moscow State University, Moscow, Russia

Author for correspondence.
Email: catrine2@mail.ru
Moscow, Russia

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