@article{10902/30601,
year = {2024},
month = {2},
url = {https://hdl.handle.net/10902/30601},
abstract = {The recovery of refrigerant blends and the subsequent separation of value-added hydrofluorocarbons (HFCs) for reuse would help to meet the phase-down in the production of virgin HFCs established by the Kigali Amendment to the Montreal Protocol. The use of ionic liquids (ILs) in extractive distillation processes has become particularly relevant. In this process, the selection of the IL is the core element for a technically and economically feasible design. For this purpose, the absorption of the HFCs difluoromethane (R-32) and pentafluoroethane (R-125), components of the equimassic mixture R-410A, in 1-alkyl-3-methylimidazolium tricyanomethanide ILs was studied. The isochoric saturation method was applied to report vapor-liquid equilibrium data over a temperature range of 283.15–323.15 K and up to 0.9 MPa. These data were fitted accurately to the NRTL activity coefficient model and the Henry's law constants, the activity coefficients at infinite dilution, the enthalpies and entropies of solvation and the thermodynamic mixing properties were calculated. Finally, [C2C1im][tcm] ranked as one of the most selective ILs to date, exhibiting a good R-32 absorption capacity that could make it a valuable solvent for the separation of R-410A by extractive distillation.},
organization = {The authors acknowledge the financial support of MCIN/AEI/10.13039/501100011033 and the European Union NextGenerationEU/PRTR to projects PID2019–105827RB-I00 and TED2021–129844B-I00. F. Pardo thanks the postdoctoral fellowship IJC2020–043134-I “Juan de la Cierva Incorporación”. M. Viar acknowledges the Concepción Arenal UC-22–23 pre-doctoral fellowship, funded by the University of Cantabria and the Government of Cantabria.},
publisher = {Elsevier},
publisher = {Fluid Phase Equilibria, 2024, 577, 113983},
publisher = {16th International Conference On Properties And Phase Equilibria For Product And Process Design (PPEPPD), La Pineda, Tarragona, 2023},
title = {Solubility of difluoromethane (R-32) and pentafluoroethane (R-125) in 1-alkyl-3-methylimidazolium tricyanomethanide ionic liquids},
author = {Viar Fernández, Miguel and Asensio Delgado, Salvador and Pardo Pardo, Fernando and Zarca Lago, Gabriel and Urtiaga Mendia, Ana María},
}