Reference : The Hydrogen Electrode in Ionic Liquids: Acidity Measurements and Titrations
Scientific congresses and symposiums : Poster
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/78468
The Hydrogen Electrode in Ionic Liquids: Acidity Measurements and Titrations
English
Robert, Thierry mailto [Université de Liège - ULg > Département de chimie (sciences) > Chimie analytique et électrochimie >]
Malherbe, Cédric mailto [Université de Liège - ULg > 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 mailto [Université de Liège - ULg > Département de chimie (sciences) > Département de chimie (sciences) >]
Mar-2010
A0
No
International
Echem 2010 Conference on Molten Salts and Ionic Liquids
March 14-19, 2010
Peter Wasserscheid
Bamberg
germany
[en] ionic liquids ; Strehlow acidity function ; Hydrogen electrode
[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.
Institut Français du Pétrol - IFP
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/78468

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