DESs have also been studied as alternatives for CO 2 capture . In contrast to ILs, DES can be synthesized from affordable and renewable raw materials under benign conditions and without the necessity for elaborate purification processes. This also translates into considerably lower production costs compared to ILs. Additionally, DESs offer desirable physicochemical properties, including low melting points, low volatility, low vapor pressure, and high thermal stability . DESs are mixtures formed by a hydrogen-bond acceptor (HBA), typically in the form of a polyatomic cation with a Lewis base as an anion, and a hydrogen-bond donor (HBD) that can be either a Brønsted or Lewis acid . The properties of DESs (such as viscosity and CO 2 solubility) can be tuned by changing the HBA and HBD components and their molar ratios. The number of possible DES mixtures that could potentially be explored for CO 2 absorption has been estimated to be O(10 18 ) . Exploring even a small fraction of this design space is experimentally impractical; such explo-ration is even more challenging when considering operating conditions that influence solubility (e.g., temperature and pressure).