Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 353, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2022.118748
Keywords
Cineole; Deep Eutectic Solvents; CO2 ; Solvation; Interfaces; Molecular Dynamics
Funding
- Ministerio de Ciencia, Innovacion y Universidades (Spain) [RTI2018-101987-B-I00]
- Western Michigan University Faculty Research and Creative Activities Award [FRACAA-23-0039670]
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This theoretical study used classical molecular dynamics simulations to investigate Natural Deep Eutectic Solvents for CO2 capture. It examined nanoscopic properties of eutectic + CO2 mixtures, including intermolecular forces, solvation, and changes in solvent properties upon CO2 absorption. The study also considered interfacial properties of the solvent with vacuum, pure CO2, and flue gas-like gas phases. The results characterized the mechanism of CO2 capture and suggested that terpenoid-based natural eutectics are suitable for green, low cost, and sustainable solvents.
A theoretical study considering classical molecular dynamics simulations on Natural Deep Eutectic Solvents based on cineole and organic acids (malic, succinic, or lactic acid) and their behavior as a solvent for CO2 capture are reported. The nanoscopic properties of eutectic + CO2 mixtures in a wide composition range are studied, considering intermolecular forces, solvation, and the changes in the solvent properties upon CO2 absorption. Likewise, interfacial properties of the solvent in contact with vacuum and pure CO2 and flue gas-like gas phases were considered. The results on solvent-gas interfaces allowed the characterization of the mechanism of CO2 capture, considered as a two stages procedure started with the gas adsorption at the interphase followed by an interface to bulk solvent diffusion leading to the gas solvation in the fluid. The study probes the suitability of terpenoid-based natural eutectics for carbon capture operations, thus allowing green, low cost, and sustainable solvents. (C)& nbsp;2022 Elsevier B.V. All rights reserved.
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