CO2 CAPTURE CHEMISTRY OF AZOLIDE-BASED IONIC LIQUIDS: INTERPLAY BETWEEN CO2, IONS, AND WATER

摘要

Ionic liquids as a class are a promising platform for the design of materials with properties tailored to CO2 capture. Azolides (aprotic, heterocyclic anions) in ionic liquids are believed to react reversibly and in one-to-one portion with CO2 when charge-compensated with tetraalkyl phosphonium cations. (Figure 1). The feature of ionic liquid is greatly affected by the existence of impurity or cosolvent like water. The impact of water would be not only limited by the physical properties of ionic liquid but also the CO2 reactivity through the formation undesirable bicarbonate formation.