Dielectric Heating of Ionic Liquids: A Successful Strategy to Enhance Regeneration Kinetics in Direct Air Capture

Abstract

Climate change mitigation strategies have driven research on energy-efficient sorbents for direct air capture (DAC). Ionic liquids (ILs) offer a flexible design and the possibility of integration with dielectric heating, presenting an opportunity to enhance cyclic CO2 recovery and significantly reduce the cost and energy consumption in DAC processes. Building upon an experimentally validated strategy to synthesize a range of quaternary ammonium salts with amino acid anions and a quat molecule counterion, a sustainable IL, [N4444][Tau+Lys], was designed to be coupled with microwave irradiation. This integrated approach led to a substantial enhancement in regeneration performance compared with..