loading page

Synergy of carbanion siting and hydrogen bonding in Super-nucleophilic deep eutectic solvents for efficient CO2 capture
  • +3
  • Meisi Chen,
  • Wenjie Xiong,
  • Shangyu Li,
  • Weida Chen,
  • Feng Zhang,
  • Youting Wu
Meisi Chen
Author Profile
Wenjie Xiong
Nanjing University
Author Profile
Shangyu Li
Author Profile
Weida Chen
Author Profile
Feng Zhang
nanjing university

Corresponding Author:[email protected]

Author Profile
Youting Wu
Nanjing University
Author Profile


Carbanion-based ionic liquids are proposed and utilized as the key components for the construction of five super-nucleophilic deep eutectic solvents (SNDESs) in the paper. The super-nucleophilic nature of carbanion-based ILs is found to enable the capture of CO2 with large absorption capacity. However, the absorption is very slow in the IL due to high viscosity. The synergy of carbanion siting and hydrogen bonding is found to enable high and fast absorption of CO2 in [N2222][CH(CN)2]-ethylimidazole (Eim), and a synergistic absorption mechanism is proposed and validated from spectroscopic analyses and quantum calculations. The enthalpy change of CO2 absorption in [N2222][CH(CN)2]-Eim is calculated to be -39.6 kJ/mol according to the thermodynamic model, and the moderate value implies that both absorption and desorption of CO2 in the DES are favored and well balanced. The synergism of carbanion and hydrogen bond mediated by SNDESs provides a novel insight into the efficient CO2 capture.
20 Jun 2023Submitted to AIChE Journal
08 Jul 2023Submission Checks Completed
08 Jul 2023Assigned to Editor
08 Jul 2023Review(s) Completed, Editorial Evaluation Pending
24 Jul 2023Reviewer(s) Assigned
08 Sep 2023Editorial Decision: Revise Minor
14 Sep 20231st Revision Received
24 Sep 2023Submission Checks Completed
24 Sep 2023Assigned to Editor
24 Sep 2023Review(s) Completed, Editorial Evaluation Pending
23 Oct 2023Editorial Decision: Accept