Abstract
In this work, a novel hydrophilic ionic liquid (IL) 1-hydroxyethyl-3-methylimidazolium lysine ([C2OHmim][Lys]) with a considerable CO2 absorption capacity of 1.68 mol CO2/mol IL was synthesized. Three reaction products between CO2 and neat [C2OHmim][Lys] were successfully separated and detected by 13C NMR. Meanwhile, the absorption capacity of [C2OHmim][Lys] aqueous solutions with an initial conentration of 1mol/L was 1.2604 mol CO2/mol IL. The reaction mechanism and kinetic study of CO2 adsorption into an aqueous solution of [C2OHmim][Lys] were also investigated by using 13C NMR and wetted wall column. In the early stage of absorption, the dominant chemical reaction was the formation of carbamate and belonged to the fast reaction. The reaction order was found to be an average value of 1.862 with respect to [C2OHmim][Lys]. At high CO2 loading (more than 0.95 mol CO2/mol IL), the hydrolysis of carbamate was the main reaction, and it was between the fast reaction and the medium-speed reaction. Also, the two...
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.
