Volatility of molten salts [Ph4P][NTf2] and Cs[NTf2]. Issue 2 (16th December 2020)

• Record Type: Journal Article
• Authors: Zaitsau, Dzmitry H.; Gantman, Mikhail; Schulz, Peter; Wasserscheid, Peter; Verevkin, Sergey P.
• Is Part Of: ChemistryOpen. Volume 10:Issue 2(2021)
• Page Start: 199
• Page End: 204
• Publication Date: 2020-12-16
• Subjects: ionic liquids -- solubility -- thermal stability -- vaporization enthalpy -- vapor pressure; Chemistry -- Periodicals; 540; 540.5
• DOI: 10.1002/open.202000260
• Languages: English
• ISSNs: 2191-1363

Abstract

Abstract: The two ionic compounds [Ph4 P][NTf2 ] and Cs[NTf2 ] were qualified to be suitable liquid materials for different high temperature applications. Development and optimization of these application techniques require knowledge of the thermodynamic properties of vaporization. Vapor pressures and vaporization enthalpies have been measured by using quartz‐crystal microbalance. Solubility parameters and miscibility of ionic liquids in practically relevant solvents were assessed. Abstract : The volatility of ionic liquids is not negligible at elevated temperatures. It is related to vapor pressures. We report the precise absolute vapor pressures and enthalpies of vaporization, of [Ph4 P][NTf2 ] and Cs[NTf2 ], which were measured using the quartz‐crystal microbalance (QCM) method. Volatilities of both compounds is significantly lower compared to commonly used [C n mim][NTf2 ] These values are useful for catalytic applications of ionic liquid as well as for qualitative assessment solubilities of ionic compounds in common ionic liquids of practical importance.