期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 301, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molliq.2020.112445
关键词
CO2 capture; Ionic liquids; X-ray and neutron reflectivity; Surface roughness and density profile; Complementary use of X-ray and neutron
In-situ observations of normal CO2 (nCO(2)) absorption and desorption were carried out on hydrophobic quaternary ammonium ionic liquids (ILs). Time-resolved mass transfer was directly monitored under a nCO(2) flow. Under the nCO(2) atmosphere, the rhythmic mass fluctuation of nCO(2) was observed in pure N-trimethyl-N-butylammonium bis(trifluoromethylsulfonyl)imide, [N4111][TFSI], in which nCO(2) capture was found to be enhanced by the use of a 2-propanol. Surface structures of IL-propanol solutions were examined via X-ray and neutron reflectivity measurements. The complicated surface structures of the [N4111][TFSI]-propanol system were clarified in both air and nCO(2) via the complementary use of X-ray and neutron measurements, whereby the nCO(2) capture in the Its was found to be influenced by the surface structures. (C) 2020 Elsevier B.V. All rights reserved.
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