RT Journal Article
T1 Phase equilibria for the mixtures of the deep eutectic solvent L-menthol + thymol plus CO2 at high pressure
A1 Pérez Velilla, Eduardo
A1 Rato, Sergio
A1 Loaisa, Gema
A1 Cabañas Poveda, Albertina
AB The Vapour-Liquid Equilibrium (VLE) of different mixtures of CO2 + L-menthol, CO2 + thymol and CO2 + L-menthol + thymol has been determined at 35, 40, 50 and 60 °C and pressures up to 220 bar using a variable volume view cell. Menthol + Thymol form a deep eutectic solvent (DES) mixture at a 1:1 molar ratio. For selected conditions, the composition of the vapour phase was determined by 1H NMR. By interpolation of the experimental values, ternary diagrams were built. The mutual solubility between CO2 and DES decreased as the proportion menthol:thymol approached the eutectic composition (1:1). Mutual miscibility also decreased with temperature and increased with pressure. The composition of the mixture of menthol + thymol (1:1) does not remain stable at 60 °C but it does at lower temperatures. The intermolecular interactions between menthol and thymol are responsible for this behaviour. The Peng-Robinson equation of state was used to correlate the results with promising results.
PB Elsevier
SN 1226-086X
YR 2023
FD 2023
LK https://hdl.handle.net/20.500.14352/92369
UL https://hdl.handle.net/20.500.14352/92369
LA eng
NO Pérez, E.; Rato, S.; Loaisa, G.; Cabañas, A. Phase equilibria for the mixtures of the deep eutectic solvent L-menthol + thymol plus CO2 at high pressure. Journal of Industrial and Engineering Chemistry 2023, 121, 312-321 DOI:10.1016/j.jiec.2023.01.034.
NO Ministerio de Economía y Competitividad (España)
DS Docta Complutense
RD 30 ago 2024