(462e) Thermodynamics & Thermophysical Properties of Thermally Robust Ionic Liquids and Their Mixtures
- Conference: AIChE Annual Meeting
- Year: 2018
- Proceeding: 2018 AIChE Annual Meeting
- Group: Topical Conference: Innovations of Green Process Engineering for Sustainable Energy and Environment
- Time: Wednesday, October 31, 2018 - 9:00am-9:15am
For the past few years, our groups have studied and characterized a number of classes of thermally robust ionic compounds. In this work, we study several classes of thermally robust ionic liquids, including per-aryl phosphonium and sulfonium salts, from a cation perspective, as well as benzesulfonate salts from an anion perspective. In addition to pure component thermodynamic and thermophysical properties (melting points, heat capacities, phase equilibria, etc.) we demonstrate that desired properties for these fluids (low melting point, high heat capacity) can be achieved through mixtures of these salts with each other and with molecular aromatics.
Traditionally, ionic liquids are distinguished from molten salts by having melting points lower than 100C, however, the term âionic liquidâ is evolving to encompass ionic compounds that are liquids in the temperature range in which they used. Here we embrace the expanded term as the classes of compounds that we are examining have structurally similar representatives some of which melt above 100C and some below, highlighting the arbitrary nature of the distinction.