CO2-driven surface reconstruction in quaternary ammonium ionic liquid-propanol solutions

Autor: Hiroshi Abe, Hiroaki Kishimura
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Journal of Ionic Liquids, Vol 2, Iss 1, Pp 100018- (2022)
Druh dokumentu: article
ISSN: 2772-4220
DOI: 10.1016/j.jil.2022.100018
Popis: X-ray reflectivity (XRR) examined surface structures of hydrophobic quaternary ammonium ionic liquids, and their propanol mixtures were examined by XRR. The quaternary ammonium cations were [N(n)111]+ (n = 3, 4, and 6) and an anion was commonly bis(trifluoromethanesulfonyl)imide, [TFSI]−. The surface tension of pure [N(n)111][TFSI] increased with increasing n. Pure [N(n)111][TFSI] surface structures were stable in all gas atmospheres. The XRR of [N3111][TFSI]-1-propanol equilibrated showed CO2-induced surface roughness. Time-resolved XRR under CO2 of [N(n)111][TFSI]-propanol provided surface instabilities and a reconstruction process. The addition of 2-propanol to CO2 in [N4111][TFSI] promoted specific surface layering and a large amount of CO2 capture.
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