Conductance studies of aqueous ionic liquids solutions [emim][BF4] and [bmim][BF4] at temperatures from (283.15 to 318.15) K.

Boruń, Agnieszka; Fernandez, Carlos; Bald, Adam

Abstract

We present for the first time the determination of molar conductances, Lambda, of ionic liquids solutions (ILs) such as 1-ethyl-3-methylimidazolium tetrafluoroborate [emim][BF4] and 1-butyl-3-methylimidazolium tetrafluoroborate [bmim][BF4] as a function of temperature. The data was analyzed with Barthel's lcCM model to obtain ionic association constants, KA, limiting molar conductances, Lambda-o of these electrolytes. The examined ionic liquids are practically fully dissociated in water over the whole temperature range (283.15 to 318.15 K). From the temperature dependence of the limiting molar conductivities the Eyring's activation enthalpy of charge transport was determined. The Walden product values were also calculated.

Citation

BORUŃ, A., FERNANDEZ, C. and BALD, A. 2015. Conductance studies of aqueous ionic liquids solutions [emim][BF4] and [bmim][BF4] at temperatures from 283.15 to 318.15 K. International journal of electrochemical science [online], 10(3), pages 2120-2129. Available from: https://doi.org/10.1016/S1452-3981(23)04834-4

• Journal Article Type: Article
• Acceptance Date: Dec 23, 2014
• Online Publication Date: Jan 19, 2015
• Publication Date: Mar 31, 2015
• Deposit Date: Sep 15, 2016
• Publicly Available Date: Jun 30, 2023
• Journal: International Journal of Electrochemical Science
• Print ISSN: 1452-3981
• Electronic ISSN: 1452-3981
• Publisher: Electrochemical Science Group
• Peer Reviewed: Peer Reviewed
• Volume: 10
• Issue: 3
• Pages: 2120-2129
• DOI: https://doi.org/10.1016/S1452-3981%2823%2904834-4
• Keywords: Limiting molar conductance; 1-alkyl-3-methylimidazolium tetrafluoroborate; Ion association; Thermodynamic functions
• Public URL: http://hdl.handle.net/10059/1718
• Publisher URL: http://www.electrochemsci.org/papers/vol10/100302120.pdf