Abstract
The purpose of this work is to determine the solubility of greenhouse gases in different ionic liquids (ILs). Experimental values for the solubility of carbon dioxide, methane and nitrous oxide in ionic liquids are measured at different temperatures and at pressures close to atmospheric. Carbon dioxide is the most soluble gas studied with mole fraction solubility of the order of 10−2. Nitrous oxide is one order of magnitude less soluble than carbon dioxide, whereas methane is the least soluble gas. Finally, a group contribution method aimed at estimating the Henry's law constant of CO2 in ILs as a function of temperature was developed. Such a method makes it possible to predict the solubility of CO2 in ionic liquids when experimental data are unavailable.
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