DISTRIBUTION A: Approved for public release, distribution unlimited Selected-Ion Flow Tube Mass Spectrometric Investigations of the Reactions Between Several Different Ions and Ionic Liquid Vapors Steven D. Chambreau, 1,a Jerry A. Boatz, 1,b Ghanshyam L.Vaghjiani, 1,b Jeffrey F. Friedman, 2,c,d Nicole Eyet, 2,d,e A. A. Viggiano 2 1 Space and Missile Propulsion Division, Propulsion Directorate, Air Force Research Laboratory, AFRL/RZSP, Edwards Air Force Base, CA 93524 2 Space Vehicles Directorate, Air Force Research Laboratory, AFRL/RVBXT, Hanscom Air Force Base, MA 01731 Introduction Future Work Experimental: SIFT Spectroscopy Conclusions Acknowledgements Mike Berman/AFOSR Tom Hawkins Stefan Schneider a ERC, Inc b Propellants Branch, email: [email protected] c University of Puerto Rico d Boston College e St. Anselm College PA Public Affairs Clearance Number . HEATED IONIC LIQUID VAPOR INLET T = 170 K Results • Cooling facilitates detection of ion + ion pair products • See ion addition or ion exchange reactions: (NTf 2 - ) • See charge transfer reactions: (dca - ) • Kinetics measurements • Branching ratios • ab initio calculations • Role of impurities • Extremely low vapor pressures of ionic liquids (IL) • Detection of IL vapors very difficult • Many ILs are thought to vaporize as intact ion pairs: C + A - • Evaporated ion pairs are easily dissociated upon ionization: C + A - C + + A· + e - • Can we attach a third ion to the ion pair for detection? • Can we look for ion exchange/charge transfer reactions? 62 453 139 125 169 179 152 155 139 125 96 82
Steven D. Chambreau, 1, a Jerry A. Boatz, 1, b Ghanshyam L.Vaghjiani, 1, b
Feb 24, 2016
Selected-Ion Flow Tube Mass Spectrometric Investigations of the Reactions Between Several Different Ions and Ionic Liquid Vapors. Steven D. Chambreau, 1, a Jerry A. Boatz, 1, b Ghanshyam L.Vaghjiani, 1, b Jeffrey F. Friedman, 2 ,c,d Nicole Eyet, 2 ,d,e A. A. Viggiano 2 - PowerPoint PPT Presentation
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DISTRIBUTION A: Approved for public release, distribution unlimited
Selected-Ion Flow Tube Mass Spectrometric Investigations of the Reactions Between Several Different Ions and Ionic Liquid Vapors
Steven D. Chambreau,1,a Jerry A. Boatz,1,b Ghanshyam L.Vaghjiani,1,b Jeffrey F. Friedman,2,c,d Nicole Eyet,2,d,e A. A. Viggiano2
1Space and Missile Propulsion Division, Propulsion Directorate, Air Force Research Laboratory, AFRL/RZSP, Edwards Air Force Base, CA 935242 Space Vehicles Directorate, Air Force Research Laboratory, AFRL/RVBXT, Hanscom Air Force Base, MA 01731
Introduction
Future Work
Experimental: SIFT Spectroscopy
Conclusions
AcknowledgementsMike Berman/AFOSRTom HawkinsStefan Schneider
aERC, Inc bPropellants Branch, email: [email protected] of Puerto RicodBoston CollegeeSt. Anselm College
PA Public Affairs Clearance Number .
HEATED IONIC LIQUID VAPOR INLET
T = 170 K
Results
•Cooling facilitates detection of ion + ion pair products•See ion addition or ion exchange reactions: (NTf2
-)•See charge transfer reactions: (dca-)
•Kinetics measurements•Branching ratios•ab initio calculations•Role of impurities
•Extremely low vapor pressures of ionic liquids (IL)•Detection of IL vapors very difficult•Many ILs are thought to vaporize as intact ion pairs: C+A- •Evaporated ion pairs are easily dissociated upon ionization:
C+A- C+ + A· + e- •Can we attach a third ion to the ion pair for detection?•Can we look for ion exchange/charge transfer reactions?
62
453
139
125169
179152 155
139
125
96
82
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