Journal
JOURNAL OF CHEMICAL AND ENGINEERING DATA
Volume 63, Issue 4, Pages 913-919Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jced.7b00534
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Funding
- European Union 7th Framework project IOLICAP [283077]
- ISPT Deep Eutectic Solvents in the Pulp and Paper Industry consortium
- Bio-Based Industries Joint Undertaking under the European Union's Horizon research and innovation programme [668970]
- Gas Research Center (GRC) in Abu Dhabi [GRC 11006]
- H2020 Societal Challenges Programme [668970] Funding Source: H2020 Societal Challenges Programme
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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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