The combined absorption-stripping process using aqueous amine solvents is considered to be the dominant near-term technology for large-scale CO 2 capture from point sources, such as coal-fired power plants, and cement and steel plants. CO 2 is primarily absorbed in the form of carbamate and bicarbonate ions, and stripped off in a later stage of the process by supplying heat to reverse the reaction and release the absorbed CO 2 . There is continuing interest in discovering CO 2 solvents that show improvements over the traditional monoethanolamine (MEA) base case, and the solvent's equilibrium CO 2 solubility is a property of primary importance. This is governed by the equilibrium constants and their temperature dependence for the involved underlying reactions, which may be represented by the following set: