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
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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
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Journal ArticleDOI
Thermodynamic properties of 1-butyl-3-methylimidazolium trifluoromethanesulfonate ionic liquid in the condensed state
TL;DR: In this article, the authors measured the heat capacity of 1-butyl-3-methylimidazolium trifluoromethanesulfonate (C4mim) in an adiabatic calorimeter.
Journal ArticleDOI
An Insight View on Synthetic Protocol, Surface Activity, and Biological Aspects of Novel Biocompatible Quaternary Ammonium Cationic Gemini Surfactants
Mohd. Akram,Hira Lal,Mohammad Osama,Farah Ansari,Sana Anwar,Kabir-ud-Din,Kabir-ud-Din,Ajaz Ahmad,Samreen,Naved Azum,Hadi M. Marwani,Abdullah M. Asiri +11 more
Journal ArticleDOI
Thermodynamic properties of the 1-butyl-3-methylimidazolium mesilate ionic liquid [C4mim][OMs] in condensed phase, using molecular simulations
Sandra Hernández-Ríos,Joel Sánchez-Badillo,Marco Gallo,Pablo López-Albarrán,Jorge Gaspar-Armenta,Raúl González-García +5 more
TL;DR: In this article, a non-polarizable classical force field for 1-butyl-3-methylimidazolium mesilate ionic liquid (C4mim][OMs] was developed.
Journal ArticleDOI
Physico-chemical properties and phase behavior of the ionic liquid-β-cyclodextrin complexes.
Marek Rogalski,Ali Modaressi,Pierre Magri,Fabrice Mutelet,Aleksandra Grydziuszko,Michał Wlazło,Urszula Domanska +6 more
TL;DR: It was shown via the activity coefficients at infinite dilution results that the inclusion complexes are dependent on the temperature, and the addition of β-CD to the IL does not improve the selectivity of the separation of the aliphatics from aromatics.
Journal ArticleDOI
Anionic dependency of electronic and nonlinear optical properties of ionic liquids
TL;DR: In this paper, the electric field-induced characteristics of eight ionic liquids with [Br]−, [BF4]− and [PF6]− anions paired with the 1-butyl-3-methyl imidazolium cation were investigated using density functional theory modeling at four theoretical levels.
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.
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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.