Surface tension of low-concentration aqueous mixtures with methanol and ethylene glycol including metastable supercooled state

0575716 - ÚT 2024 IT eng A - Abstrakt
Vinš, Václav - Součková, Monika - Čenský, Miroslav - Prokopová, Olga - Hrubý, Jan - Blahut, Aleš - Aminian, Ali
Surface tension of low-concentration aqueous mixtures with methanol and ethylene glycol including metastable supercooled state.
22nd EUROPEAN CONFERENCE ON THERMOPHYSICAL PROPERTIES. Venice, 2023. s. 255-255. ISBN 9791221042207.
[European Conference on Thermophysical Properties /22./. 10.09.2023-13.09.2023, Venice]
Grant CEP: GA ČR(CZ) GA22-03380S
Institucionální podpora: RVO:61388998
Klíčová slova: aqueous mixture * ethylene glycol * methanol surface tension
Obor OECD: Thermodynamics
https://www.ectp2023.eu/book-of-abstracts

New data for the surface tension of water + methanol and water + ethylene glycol measured on a unique apparatus of own design are presented. The apparatus based on a modified capillary rise technique enables measurements under the supercooled metastable state, i.e. under the equilibrium freezing point temperature. The data collected in the temperature range from –25 to 30 °C show quite good agreement with the mixture correlation by Wang et al. [Ind. Eng. Chem. Res. 50 (2011)] combined with the IAPWS standard for pure water and the correlations by Mulero et al. [J. Phys. Chem. Ref. Data 44 (2015)] for pure methanol and ethylene glycol. Preliminary analysis shows that the correlations can be well extrapolated to the supercooled region. Supporting data for the density of both binary systems were collected using the vibrating tube densimeter over the full composition range at temperatures from 2 to 90 °C. The standard uncertainties of the surface tension and density data are below 0.50 mN·m-1 and 0.040 kg·m-3, respectively.
Trvalý link: https://hdl.handle.net/11104/0349490