Application of GaInSn Liquid Metal Alloy Replacing Mercury in a Phase Equilibrium Cell : Vapor Pressures of Toluene, Hexylbenzene, and 2-Ethylnaphthalene

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2020-07-09
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Language
en
Pages
7
3270-3276
Series
Journal of Chemical and Engineering Data, Volume 65, issue 7
Abstract
Mercury has been applied as a sealing and pressure transmission fluid in many experimental phase equilibrium studies employing the synthetic visual method as well as a moving piston in analytical isobaric and/or isothermal methods. However, mercury is highly toxic and therefore its use is restricted by authorities such as those of the European Union. A new apparatus employing nontoxic GaInSn liquid metal alloy as a sealing, moving piston, and pressure transmission fluid for phase equilibrium measurements with a nonvisual variable volume method is presented. The vapor pressures of toluene, hexylbenzene, and 2-ethylnaphtalene are provided within the applied temperature range of 400-620 K. New values for the parameters of the DIPPR 101 and Wagner equations, and PC-SAFT equation of state were regressed. The results demonstrate that GaInSn can be used in phase equilibrium cells as a very convenient substitute for mercury, especially at high temperatures.
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Touronen , J , Männistö , M , Richon , D , Uusi-Kyyny , P & Alopaeus , V 2020 , ' Application of GaInSn Liquid Metal Alloy Replacing Mercury in a Phase Equilibrium Cell : Vapor Pressures of Toluene, Hexylbenzene, and 2-Ethylnaphthalene ' , Journal of Chemical and Engineering Data , vol. 65 , no. 7 , pp. 3270-3276 . https://doi.org/10.1021/acs.jced.9b01208