Journal ArticleDOI
Thermophysical Properties of Imidazolium-Based Ionic Liquids
Christopher P. Fredlake,Jacob M. Crosthwaite,Daniel G. Hert,and Sudhir N. V. K. Aki,Joan F. Brennecke +4 more
TLDR
In this paper, the authors present density as a function of temperature, melting temperatures, glass transition temperatures, decomposition temperatures, and heat capacities for 13 ionic liquids, including 1-butyl-3-methylimidazolium trifluoromethanesulfonate.Abstract:
Ionic liquids (ILs) are salts that are liquid at low temperatures, usually including the region around room temperature. They are under intense investigation, especially as replacement solvents for reactions and separations, since they exhibit negligible vapor pressure and would not, therefore, contribute to air pollution. Clearly, basic thermophysical properties are vital for design and evaluation for these applications. We present density as a function of temperature, melting temperatures, glass-transition temperatures, decomposition temperatures, and heat capacities as a function of temperature for a series of 13 of the popular imidazolium-based ILs. The ionic liquids investigated here are 1-butyl-3-methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium hexafluorophosphate, 1-butyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium bromide, 1-butyl-3-methylimidazolium dicyanamide, 1-butyl-3-methylimidazolium trifluoromethanesulfonate, 1-butyl-3-methylimidazolium tris(trifluoromethylsul...read more
Citations
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Journal ArticleDOI
Investigation of 1,2,3-trialkylimidazolium ionic liquids: experiment and density functional theory calculations
Snežana Papović,Milan Vraneš,Stevan Armaković,Sanja J. Armaković,Katalin Mészáros Szécsényi,Marija Bešter-Rogač,Slobodan Gadžurić +6 more
TL;DR: In this article, the authors investigated the properties of 1,2,3-trialkylimidazolium based ionic liquids (ILs) by viscosity and density measurements together with thermogravimetric analysis (TGA) and IR spectroscopy.
Journal ArticleDOI
Interaction of Ester-Functionalized Ionic Liquids with Atomically-Defined Cobalt Oxides Surfaces: Adsorption, Reaction and Thermal Stability
Tao Xu,Tobias Waehler,Julia Vecchietti,Adrian Lionel Bonivardi,Tanja Bauer,Johannes Schwegler,Peter S. Schulz,Peter Wasserscheid,Jörg Libuda +8 more
TL;DR: In this paper, the interaction of ester-functionalized ionic liquid (ILs) with atomically defined Co3 O4 (111) and CoO(100) surfaces was investigated.
Journal ArticleDOI
Liquid window of some biologically-active ionic liquids
TL;DR: In this paper, the liquid range of six Ionic liquids with potential uses in biological applications was determined using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA).
Journal ArticleDOI
Real-space analysis of diffusion behavior and activation energy of individual monatomic ions in a liquid
TL;DR: This work directly observes the motion of individual monatomic ions in an ionic liquid using scanning transmission electron microscopy (STEM) and reveals that the ions diffuse by a cage-jump mechanism, which connects the atomic-scale dynamics to macroscopic liquid properties.
Journal ArticleDOI
Self-Assembly and Thermal Stability of Ether-Functionalized Imidazolium Ionic Liquids
TL;DR: A series of short-chain ionic liquids with N-methylimidazolium headgroup have been synthesized and investigated for their selfaggregation behavior in aqueous medium by conductivity, surface tension, and fluorescence techniques as discussed by the authors.
References
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Journal ArticleDOI
Ionic Liquids-New "Solutions" for Transition Metal Catalysis.
Peter Wasserscheid,Wilhelm Keim +1 more
TL;DR: There are indications that switching from a normal organic solvent to an ionic liquid can lead to novel and unusual chemical reactivity, which opens up a wide field for future investigations into this new class of solvents in catalytic applications.
Journal ArticleDOI
Hydrophobic, Highly Conductive Ambient-Temperature Molten Salts
Pierre Bonhote,Ana-Paula Dias,Nicholas Papageorgiou,Kuppuswamy Kalyanasundaram,Michael Grätzel +4 more
TL;DR: New, hydrophobic ionic liquids with low melting points (<−30 °C to ambient temperature) have been synthesized and investigated, based on 1,3-dialkyl imidazolium cations and hydrophilic anions and thus water-soluble.
Journal ArticleDOI
Characterization and comparison of hydrophilic and hydrophobic room temperature ionic liquids incorporating the imidazolium cation
Jonathan G. Huddleston,Ann E. Visser,W. Matthew Reichert,Heather D. Willauer,Grant A. Broker,Robin D. Rogers +5 more
TL;DR: A series of hydrophilic and hydrophobic 1-alkyl-3-methylimidazolium room temperature ionic liquids (RTILs) have been prepared and characterized to determine how water content, density, viscosity, surface tension, melting point, and thermal stability are affected by changes in alkyl chain length and anion.
Journal ArticleDOI
Molecular states of water in room temperature ionic liquids
TL;DR: In this paper, the authors used ATR and transmission IR spectroscopy to investigate the state of water in room temperature ionic liquids (RTILs) based on the 1-alkyl-3-methylimidazolium cation with the anions.