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

Touronen, JAalto University, School of Chemical Engineering, Department of Chemical and Metallurgical Engineering, Aalto, Finland (författare)

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.

Männistö, MAalto University, School of Chemical Engineering, Department of Chemical and Metallurgical Engineering, Aalto, Finland (författare)
Richon, DAalto University, School of Chemical Engineering, Department of Chemical and Metallurgical Engineering, Aalto, Finland (författare)
Uusi-Kyyny, PAalto University, School of Chemical Engineering, Department of Chemical and Metallurgical Engineering, Aalto, Finland (författare)
Alopaeus, VilleAalto University, School of Chemical Engineering, Department of Chemical and Metallurgical Engineering, Aalto, Finland(Swepub:miun)vilalo (författare)
Aalto University, School of Chemical Engineering, Department of Chemical and Metallurgical Engineering, Aalto, Finland (creator_code:org_t)

Ingår i:Journal of Chemical and Engineering Data: American Chemical Society (ACS)65:7, s. 3270-32760021-95681520-5134

Av författaren/redakt...: Touronen, J; Männistö, M; Richon, D; Uusi-Kyyny, P; Alopaeus, Ville

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