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Showing 1 to 20 of 231 for “"Ionic Liquid"”.
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Membrane Drying of Ionic Liquid
<p>Room temperature ionic liquids (RTILs or, simply, ILs) are liquid salts at temperatures near or slightly above room temperature. ILs consist entirely of bulky, asymmetric organic cations and a variety of anions and, as a consequence, ILs have non-measureable vapor pressure. Due to their unique …
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Ionic liquid behavior on rough surfaces
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2018-05-01
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Systematic coarse-graining of ionic liquid
… molecular simulation of imidazolium-based ionic liquids (ILs). To obtain CGFF parameters, we employ a systematic coarse-graining approach based on the relative entropy (RE) method to reproduce not only the structure but also the thermodynamic properties of the reference all-atom molecular …
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Ionic liquid electrochemical processing of reactive metals
Ionic liquids (ILs) were studied as solvents for electrochemical reactions with the intent to devise metallurgical processes for Al, Mg and Ti that are less energy intensive and operate at lower temperatures than current industrial practice. Tetra-alkyl phosphonium ILs are on the low end of the IL …
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Poly(ionic liquid) stabilizers and new synthetic approaches
… to investigate the stabilization ability of poly(ionic liquid)s (PILs) in several examples as well as develop novel chemical structures and synthetic routes of PILs. The performed research can be specifically divided into three parts that include synthesis and application of hybrid material …
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Numerical Characterization of Fragmentation in Ionic Liquid Clusters
Ionic liquid ion sources are a promising technology that can be used for many applications from space propulsion to focused ion beam microetching. The variety of ionic liquids that can be synthesized enables the selection of desired beam properties for optimizing propulsion and focused ion beam …
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Electromechanical Transduction in Ionic Liquid-Swollen Nafion Membranes
… in a non-aqueous environment. In this work, ionic liquids are demonstrated as viable diluents for ionomeric polymer transducers based on Nafion membranes. Ionic liquids are molten salts that are highly thermally stable and have an immeasureably low vapor pressure. Therefore, the ionic …
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Experimental investigation of ionic liquid mixtures for electrospray propulsion
… The second paper identifies how changes in ionic liquid (IL) mixture ratio affects the species present in the plume and shows clear variations in plume species with mixture ratio for [Emim][EtSO<sub>4</sub>] and ethylammonium nitrate mixtures. The last paper quantifies how non-linearity in …
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Linear burn rate of green ionic liquid multimode monopropellant
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2020-02-28 without embargo terms
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Engineering ionic liquid ion sources for ion beam applications
Ionic liquid ion sources (ILIS) are devices capable of producing positive and negative molecular ion beams through field evaporation from room-temperature molten salts. If sufficiently high hydraulic impedance from the liquid-supporting emitter is provided such that the ratio of flow rate Q to …
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Surfactant self-assembly in a magnetic room temperature ionic liquid
In der vorliegenden Arbeit wurde die Selbstorganisation von Tensiden in einem wasserfreien Modellsystem untersucht, und zwar durch Verwendung von verschiedenen magnetischen raumtemperaturionischen Flüssigkeiten (MRTIL, Alkylimidazoliumtetrachloroferraten, CimimFeCl4 mit i = 2, 4, 6) als …
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A versatile design platform for multi-heterocyclic ionic liquid synthesis
Ionic liquids (ILs, briefly defined as salts exhibiting melting points below 100 degrees centrigrade) have been extensively researched in the past few decades, where properties controllable through selective variation in ion structure have supported a variety of discoveries in materials design. The …
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Synthesis and electrochemical studies of novel ionic liquid based electrolytes
<p>"Room temperature ionic liquids (RTILs) have received substantial interest as nonaqueous electrolytes in lithium ion- and metal-air batteries in recent years due to their low volatility, non-flammability, wide liquid range, and thermal stability characteristics. Towards developing a new …
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Analysis of ion emitting jet structures during ionic liquid electrospraying
<p>"The ionic liquid [Bmim][DCA] is a propellant candidate for a standalone electrospray thruster or a dual-mode propulsion system. Characterization of positive polarity ions produced by [Bmim][DCA] capillary emitters with a nominal extraction voltage of 2.0 kV within a quadrupole and …
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Room Temperature Ionic Liquid (Rtil) Membranes For Bio-Methane Dehumidification
… Water vapor does not plasticize room temperature ionic liquid membranes (RTIL-membranes) according to literature data, and RTIL-membranes have water/CH4 selectivities > 6000. In this paper we will build on the initial literature RTIL-dehumidification data by looking at a series of ammonium and …
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Investigation of drug ionic liquid salts for topical delivery systems
… in the form of salts which are held together by ionic bonds along with some other forces. Recently, Ionic liquids (ILs) an interesting class of chemical compounds have offered potential opportunity for exploration as novel drug ionic liquid salts, particularly in the field of transdermal/topical …
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Characterization of ion Cluster fragmentation in ionic liquid ion sources
… Novel room temperature molten salts, called ionic liquids, are used as propellant, which are composed purely of positive and negative molecular ions. When exposed to strong electric fields, ions and metastable clusters of ions are evaporated from the bulk liquid surface. The free ions and ion …
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Thermodynamic properties of phosphonium-based ionic liquid mixtures at different temperatures
Submitted in the fulfillment of the academic requirements for the degree of Masters of Applied Science in Chemistry, Durban University of Technology. Durban, South Africa, 2018.
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