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The increasing global levels of anthropogenic greenhouse gases (GHGs), especially CO 2 emissions, have caused environmental problems that impact humanity and the ecosystems. Therefore, gas capture and storage are a feasible solution to this global issue. Some aqueous amine solutions, such as monoethanolamine (MEA), have been used to capture GHGs, but they are not environment friendly. Research on greener solvents for this task led to deep eutectic solvents (DESs) as a novel option. This review explores the applications of different DESs; compares the differences between gas solubility methodologies; and studies the interference of the DESs' molar ratio, the influence of HBA and HBD, and the differences between the solubility of some gases in these solvents. More than 40 DESs have been analyzed; however, some gaps need to be filled, such as data for gas solubility under higher pressures and thermodynamic modeling of experimental data.

This work reports new vapor pressure data of soybean oil, castor oil, and their fatty acid ethyl ester mixtures (FAEE) obtained from an enzyme-catalyzed reaction. Vapor pressure measurements were carried out in a temperature range of (290 to 355 K) using a static method having a differential pressure transducer with a precision of 5 Pa. Degassing was performed inside the equilibrium cell by freezing and thawing the samples under moderate vacuum (about 50 kPa). For vegetable oils, vapor pressure values varied in the range of (0.19 to 2.16) kPa, whereas for FAEE mixtures a maximum value of 4.85 kPa was found. Experimental vapor pressure data were correlated by the Antoine equation with good agreement between experiment and the model.

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