I&EC 257 |
| Ion field evaporation occurs at the liquid-vacuum interface of conducting liquids at electric field strengths in excess of 1 V/nm. The electrospray of room temperature ionic liquids is currently being tested for space propulsion applications. Ionic liquids are ideally suited for space applications due to their high conductivity and negligible vapor pressure. It has recently been demonstrated that certain ionic liquids can be electrosprayed in a droplet-free, pure ion emission mode. The physics associated with this ion field evaporation process is not yet fully understood. Mass spectrometry of field evaporated ions provides information on the interfacial field evaporation mechanism. An overview of space propulsion needs will be presented as well as measurements of the sprays emitted from the ionic liquids, [Emim][BF4], [Emim][Im], and [Emim][NO3]. |
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Ionic Liquids: Not Just Solvents Anymore OR Ionic Liquids: Parallel Futures (Sponsored by Green Chemistry and Engineering, Separation Science and Technology and Novel Chemistry with Industrial Applications Sub-Divisions)
8:30 AM-12:30 PM, Wednesday, 29 March 2006 Georgia World Congress Center -- B314, Oral
Division of Industrial and Engineering Chemistry |