Abstract
The solubility of CO2 in a hydrophilic and a hydrophobic deep eutectic solvent (DES) has been measured at pressures up to 2 MPa and a temperature of 308.15 K. The CO2 solubility was found to be much higher in the hydrophobic DES than in the hydrophilic DES. Both DESs could be repeatedly used as absorbing agents without losing absorption capacity. Thus, the DESs do not react among themselves and the CO2 absorption process is fully reversible. The results were also compared to solubility data with ionic liquids (ILs) and currently applied physical solvents. The measured CO2 solubilities in the best performing (hydrophobic) DES were found to be similar to those in fluorinated ILs, which are known for their high CO2 capture capability, but are much more expensive and less environmentally benign than the hydrophobic DES studied in this work. Moreover, the values are very close to that of Selexol, the current industrial standard for physical CO2. absorption. Thus, hydrophobic DESs are a promising alternative class of CO2 capture media.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
