Heats of vaporization of room temperature ionic liquids by tunable vacuum ultraviolet photoionization
作者： Steven D. Chambreau , Ghanshyam L. Vaghjiani , Albert To , Christine Koh , Daniel Strasser
DOI: 10.1021/JP909423M
关键词: Photoionization 、 Ionic liquid 、 Dicyanamide 、 Chemistry 、 Enthalpy of vaporization 、 Ion 、 Vaporization 、 Beamline 、 Analytical chemistry 、 Ionization
摘要: The heats of vaporization the room temperature ionic liquids (RTILs) N-butyl-N-methylpyrrolidinium bistrifluorosulfonylimide, dicyanamide, and 1-butyl-3-methylimidazolium dicyanamide are determined using a heated effusive vapor source in conjunction with single photon ionization by tunable vacuum ultraviolet synchrotron source. relative gas phase liquid densities beam monitored clearly distinguished dissociative photoionization processes via time-of-flight mass spectrometer at beamline 9.0.2.3 (Chemical Dynamics Beamline) Advanced Light Source facility. Resulting relatively few assumptions, through analysis both parent cations fragment cations, heat bistrifluorosulfonylimide is to be ΔHvap(298.15 K) = 195 ± 19 kJ mol−1. observed (ΔHvap(298...
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