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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Rational Polymer Design of Stretchable Poly(ionic liquid) Membranes for Dual Applications
Bingrui Li,Sheng Zhao,Jiadeng Zhu,Sirui Ge,Kunyue Xing,Alexei P. Sokolov,Alexei P. Sokolov,Tomonori Saito,Tomonori Saito,Peng-Fei Cao +9 more
TL;DR: In this paper, the authors make elastic polymeric materials and make them flexible and elastic, and such achievement is especially meaningful in a wide range of applications, such as medical and aerospace.
Journal ArticleDOI
Melting point depression of ionic liquids by their confinement in carbons of controlled mesoporosity
François Béguin,Vladimir Pavlenko,Vladimir Pavlenko,Patryk Przygocki,Mirosława Pawlyta,Paula Ratajczak +5 more
TL;DR: In this article, the effect of ionic liquids (ILs) confinement in the nanoporosity of carbons on their low temperature transitions has been studied by differential scanning calorimetry.
Journal ArticleDOI
Thermophysical Properties of 1-Butyl-3-methylimidazolium Trifluoromethanesulfonate in a Wide Range of Temperatures and Pressures
TL;DR: In this article, an equation of state for fitting of the (p,ρ,T) data of 1-butyl-3methylimidazolium trifluoromethanesulfonate [BMIM][TFO] was developed as a function of pressure and temperature.
Journal ArticleDOI
Ionic Liquids as Solvent Probes for NMR Cryoporometry
TL;DR: ILs, salts with a melting point below 100 8C, have shown great promise in both experimental and theoretical environments in the past decade, leading to a burgeoning area of research and industrial applications, such as the BASIL (Biphasic Acid Scavenging utilizing Ionic Liquids) process.
Journal ArticleDOI
Synthesis and characterization of physical, thermal and thermodynamic properties of ionic liquids based on [C12mim] and [N444H] cations for thermal energy storage
TL;DR: In this article, the authors characterized the thermal properties of ionic liquids for use in thermal energy storage and showed that they have good thermal properties for use as heat transfer fluids (HTF), such as wide temperature ranges as liquids and high decomposition temperatures.
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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.