Abstract
New experimental vapor pressures in the range 407 K to 460 K and vaporization enthalpy of the ionic liquids (IL) N-alkyl-N-methyl-pyrrolidinium bis(fluorosulfonyl)imide ionic liquids have been measured using quartz crystal microbalance. The absolute vapor pressures and vaporization enthalpies were compared with analogous pyrrolidinium-based ILs with the bis(trifluoromethanesulfonyl)imide anion. The evaluated difference in vaporization enthalpy of ILs with bis(fluorosulfonyl)imide and bis(trifluoromethanesulfonyl)imide anions allowed for estimation of corresponding property for a wide set of ILs with bis(fluorosulfonyl)imide anion. The results are relevant to chemical engineering calculations of processes involving ILs as reaction and separation media.
Highlights
The irreversible trend of modern technologies towards renewable energies requires safe storage and delivery of the generated energy
This paper extends our previous studies on the structure–property relations in ILs families and deals with vapor pressure measurements on N-alkyl-N-methyl-pyrrolidinium bis(fluorosulfonyl)imide ionic liquids
In order to confirm the absence of decomposition of IL under the experimental conditions, the residual IL in the crucible and the IL-deposit on Quartz Crystal Microbalance (QCM) were analyzed by ATR-IR spectroscopy
Summary
The irreversible trend of modern technologies towards renewable energies requires safe storage and delivery of the generated energy. Lithium-ion batteries are among the most effective technical solutions today. This article is part of the Special Issue in Memory of Professor Talgat Khasanshin
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