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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received August 15, 2023
Accepted January 17, 2024
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Most Cited

Exploring the Eff ect of Diff erent Anions and Cations on the Solubility of CO 2 in Nitrile Imidazolium-Based Ionic Liquids with Sulfonated-Based Anions

Department of General Studies , Jubail Industrial College , Jubail Industrial City 1Department of Chemical Engineering, College of Engineering , Najran University 2Department of Chemistry, College of Science , King Faisal University 3Department of Chemistry, Faculty of Science , University of Khartoum 4Fundamental and Applied Science Department , Universiti Teknologi PETRONAS
Korean Journal of Chemical Engineering, June 2024, 41(6), 1791-1803(13), https://doi.org/10.1007/s11814-024-00127-z

Abstract

The eff ect of diff erent cations and anions on the CO 2 solubility in ionic liquids was investigated using a systematic approach

in the current work. Four ionic liquids (ILs) containing the same cation ([C 2 CN Bim]) were synthesized, each incorporating

a diff erent anion (DDS, BS TFMS, and DOSS). In addition, four ILs with diff erent cations ([C 2 CN Bim], [C 2 CN Him],

[C 2 CN Oim], and [C 2 CN Dim]) were prepared, all containing the same anion (DOSS). Then, these ILs were characterized

and utilized to determine how various cations and anions infl uence CO 2 solubility. The prepared ILs were characterized

using NMR and elemental analysis. Impurities, such as moisture and halide content were also determined. The CO 2 solubility

was studied using the gravimetric method (MSB) at pressures of 1, 5, 10, 15, and 20 bar. An investigation was also

conducted to examine the infl uence of temperature on the solubility of CO 2 in [C 2 CN Dim] [DOSS]. Henry’s law constants

were calculated along with the thermodynamic properties such as standard enthalpy, entropy, and Gibbs free energy (Δ H 0 ,

Δ S 0 , ΔG 0 ). In addition, the CO 2 /CH 4 solubility selectivity was determined.

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