Carbon Dioxide Solubilities in Decanoic Acid-Based Hydrophobic Deep Eutectic Solvents

The solubility of CO2 in hydrophobic deep eutectic solvents (DESs) has been measured for the first time. Six different hydrophobic DESs are studied in the temperature range from 298 to 323 K and at CO2 pressures up to 2 MPa. The results are evaluated by comparing the solubility data with existing hy...

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Published inJournal of chemical and engineering data Vol. 63; no. 4; pp. 913 - 919
Main Authors Zubeir, Lawien F, van Osch, Dannie J. G. P, Rocha, Marisa A. A, Banat, Fawzi, Kroon, Maaike C
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 12.04.2018
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Summary:The solubility of CO2 in hydrophobic deep eutectic solvents (DESs) has been measured for the first time. Six different hydrophobic DESs are studied in the temperature range from 298 to 323 K and at CO2 pressures up to 2 MPa. The results are evaluated by comparing the solubility data with existing hydrophilic DESs and currently applied physical solvents and fluorinated ionic liquids. The DESs are prepared by mixing decanoic acid with a quaternary ammonium salt with different halide anions and alkyl chain lengths. The measured CO2 solubilities are similar to those found in renowned fluorinated ILs, while the heats of CO2 absorption are in the range of nonpolar solvents. The presented DESs show good potential to be used as CO2 capture agents.
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ISSN:0021-9568
1520-5134
DOI:10.1021/acs.jced.7b00534