ORBi: Robert Thierry - The Hydrogen Electrode in Ionic Liquids: Acidity Measurements and Titrations

Reference : The Hydrogen Electrode in Ionic Liquids: Acidity Measurements and Titrations


	Document type :	Scientific congresses and symposiums : Poster
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Chemistry
	To cite this reference:	http://hdl.handle.net/2268/78468

Title :	The Hydrogen Electrode in Ionic Liquids: Acidity Measurements and Titrations
Language :	English
Author, co-author :	Robert, Thierry [Université de Liège - ULg > Département de chimie (sciences) > Chimie analytique et électrochimie >]
	Malherbe, Cédric [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 [Université de Liège - ULg > Département de chimie (sciences) > Département de chimie (sciences) >]
Publication date :	Mar-2010
Page number :	A0
Audience :	International
Event name :	Echem 2010 Conference on Molten Salts and Ionic Liquids
Event date :	March 14-19, 2010
Event organizer :	Peter Wasserscheid
Event place (city) :	Bamberg
Event country :	germany
Keywords :	[en] 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.
Funders :	Institut Français du Pétrol - IFP
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/78468

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