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The Hydrogen Electrode in Ionic Liquids: Acidity Measurements and Titrations
Robert, Thierry; Malherbe, Cédric; Magna, lionel et al.
2010Echem 2010 Conference on Molten Salts and Ionic Liquids
 

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Keywords :
ionic liquids; Strehlow acidity function; Hydrogen electrode
Abstract :
[en] The acidity level in ILs containing acid was first determined using the Hammett acidity function (H0)1-2 in our laboratory. It was demonstrated that this attainable acidity, extending from -3 to -8, is exclusively depending of the nature of anion and follow the order: PF6 > BF4 > NTf2 > OTf. Nevertheless, the Hammett acidity function is an apparent function in this media and must then be corrected for. Consequently, in a second step, we tried to evaluate directly the proton activity from the determination of a potentiometric acidity function (R0) based on the extrathermodynamic Strehlow assumption.3 Therefore, the equilibrium potential of the H+/H2 couple was measured with an hydrogen electrode versus the ferricinium/ferrocene couple for which the potential is considered as independent of the solvent.
Disciplines :
Chemistry
Author, co-author :
Robert, Thierry ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie analytique et électrochimie
Malherbe, Cédric ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie analytique et électrochimie
Magna, lionel;  Institut Français du Pétrol -IFP
Olivier-Bourbigou, Hélène;  Institut Français du Pétrol - IFP
Gilbert, Bernard ;  Université de Liège - ULiège > Département de chimie (sciences) > Département de chimie (sciences)
Language :
English
Title :
The Hydrogen Electrode in Ionic Liquids: Acidity Measurements and Titrations
Publication date :
March 2010
Number of pages :
A0
Event name :
Echem 2010 Conference on Molten Salts and Ionic Liquids
Event organizer :
Peter Wasserscheid
Event place :
Bamberg, Germany
Event date :
March 14-19, 2010
Audience :
International
Funders :
IFP - Institut Français du Pétrole [FR]
Available on ORBi :
since 02 December 2010

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