Electrochemical monitoring of the co-extraction of water with hydrated ions into an organic solvent

0486652 - ÚFCH JH 2019 RIV NL eng J - Journal Article
Mareček, Vladimír
Electrochemical monitoring of the co-extraction of water with hydrated ions into an organic solvent.
Electrochemistry Communications. Roč. 88, MAR 2018 (2018), s. 57-60. ISSN 1388-2481. E-ISSN 1873-1902
R&D Projects: GA ČR(CZ) GA17-09980S
Institutional support: RVO:61388955
Keywords : Liquid/liquid interface * Water co-extraction dynamics * Emulsification
OECD category: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Impact factor: 4.197, year: 2018

An electrochemical cell based on the interface between two immiscible electrolyte solutions (ITIES) was designed and used to study the co-extraction of water with hydrated chloride ions from the aqueous to the organic solvent phase. The interfacial potential was controlled by the distribution of a common tetralkylammonium (TAA+) ion. Transfer of hydrated chloride ions is accompanied by the transfer of TAA+, decreasing its concentration on the aqueous side of the interface. Changes in the TAA+ concentration at the interface were monitored by measuring the open circuit potential (OCP). The proposed mechanism of TAACl transport involves a follow-up reaction with the co-extracted water molecules, leading to the formation of clusters of water containing TAACl in the organic phase.
Permanent Link: http://hdl.handle.net/11104/0281398