Physical absorption of CO2 in betaine/carboxylic acid-based Natural Deep Eutectic Solvents.
In: Journal of Molecular Liquids, Jg. 315 (2020-10-01), S. N.PAG
Online
academicJournal
Zugriff:
The ability of some zwitterionic natural deep eutectic solvents (NADESs) based on N , N , N -trimethylglycine (TMG) and carboxylic acids (oxalic, glycolic and phenylacetic) to act as environmentally friendly solvents for CO 2 capture has been investigated. The solubility of CO 2 in the NADESs was measured gravimetrically at different temperatures in the range 298.15–333.15 K, and at different pressures in the range 0.1–4 MPa. The effect of the adopted experimental conditions has been discussed. The highest uptake has been observed for phenylacetic acid/TMG DES at 313.15 K and 4 MPa (45.5 mg CO 2 /g DES). The efficiency of this NADES as CO 2 sorbent when reused in subsequent capture cycles has been evaluated. This work might open new perspectives in developing the most appropriate combination of HBA and HBD components of the DESs and the most appropriate operative conditions for an environmentally friendly CO 2 capture. Unlabelled Image • Conventional NADESs are useful solvents for the physical CO 2 absorption. • π-π interactions and the presence of vacancies are fundamental for CO 2 capture. • Optimal NADESs can be designed to act as physical sorbent for the capture of CO 2. [ABSTRACT FROM AUTHOR]
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Physical absorption of CO2 in betaine/carboxylic acid-based Natural Deep Eutectic Solvents.
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Autor/in / Beteiligte Person: | Siani, Gabriella ; Tiecco, Matteo ; Di Profio, Pietro ; Guernelli, Susanna ; Fontana, Antonella ; Ciulla, Michele ; Canale, Valentino |
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Zeitschrift: | Journal of Molecular Liquids, Jg. 315 (2020-10-01), S. N.PAG |
Veröffentlichung: | 2020 |
Medientyp: | academicJournal |
ISSN: | 0167-7322 (print) |
DOI: | 10.1016/j.molliq.2020.113708 |
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