Self-perturbation of the salt partition at the water/1,2-dichloroethane interface

0532425 - ÚFCH JH 2021 RIV GB eng J - Článek v odborném periodiku
Trojánek, Antonín - Samec, Zdeněk - Mareček, Vladimír
Self-perturbation of the salt partition at the water/1,2-dichloroethane interface.
Electrochimica acta. Roč. 361, NOV 2020 (2020), č. článku 137059. ISSN 0013-4686. E-ISSN 1873-3859
Grant CEP: GA ČR(CZ) GA20-01589S
Institucionální podpora: RVO:61388955
Klíčová slova: Water/1,2-dichloroethane interface * Salt partition * Open circuit potential
Obor OECD: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Impakt faktor: 6.901, rok: 2020
Způsob publikování: Omezený přístup

Recently, we have proposed [1] and reconsidered [2] a model of the salt partition at a water/organic solvent interface emphasizing the role of the hydrated salt clusters in the organic solvent phase [3]. These clusters can be either transferred from the aqueous salt solution [4], [5], [6], or formed directly in the organic solvent phase from the dissolved water molecules [3,7]. The model explains the anomalous extraction of tetrapentylammonium chloride from water to 1,2-dichloroethane (DCE), which was indicated by an analysis of the open circuit potential (OCP) measured at the water/DCE interface [2]. Essentially, we have shown that the amount of the extracted TPeA+ and Cl− ions exceeds considerably the limit imposed by the equilibrium concentration of the Cl− ions in DCE and the electroneutrality condition [2]. The excessive TPeACl was assumed to be accumulated in the hydrated salt clusters in DCE, the formation of which thus represents the driving force of the anomalous salt extraction [2].
Trvalý link: http://hdl.handle.net/11104/0310921