Solubility of difluoromethane (R-32) and pentafluoroethane (R-125) in 1-alkyl-3-methylimidazolium tricyanomethanide ionic liquids

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 distillati...

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Autores: Viar Fernández, Miguel|||0000-0002-4809-0952, Asensio Delgado, Salvador|||0000-0002-0722-6139, Pardo Pardo, Fernando|||0000-0001-9821-0310, Zarca Lago, Gabriel|||0000-0002-4072-4252, Urtiaga Mendia, Ana María|||0000-0002-8189-9171
Formato: artículo
Fecha de publicación:2024
País:España
Recursos:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/30601
Acesso em linha:https://hdl.handle.net/10902/30601
Access Level:acceso abierto
Palavra-chave:Absorption
Hydrofluorocarbon
Ionic liquid
NRTL
Phase equilibrium
Vapor-liquid equilibrium
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spelling Solubility of difluoromethane (R-32) and pentafluoroethane (R-125) in 1-alkyl-3-methylimidazolium tricyanomethanide ionic liquidsViar Fernández, Miguel|||0000-0002-4809-0952Asensio Delgado, Salvador|||0000-0002-0722-6139Pardo Pardo, Fernando|||0000-0001-9821-0310Zarca Lago, Gabriel|||0000-0002-4072-4252Urtiaga Mendia, Ana María|||0000-0002-8189-9171AbsorptionHydrofluorocarbonIonic liquidNRTLPhase equilibriumVapor-liquid equilibriumThe 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.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.ElsevierUniversidad de Cantabria20242024-02-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttps://hdl.handle.net/10902/30601Fluid Phase Equilibria, 2024, 577, 11398316th International Conference On Properties And Phase Equilibria For Product And Process Design (PPEPPD), La Pineda, Tarragona, 2023reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/306012026-06-02T12:39:31Z
dc.title.none.fl_str_mv Solubility of difluoromethane (R-32) and pentafluoroethane (R-125) in 1-alkyl-3-methylimidazolium tricyanomethanide ionic liquids
title Solubility of difluoromethane (R-32) and pentafluoroethane (R-125) in 1-alkyl-3-methylimidazolium tricyanomethanide ionic liquids
spellingShingle Solubility of difluoromethane (R-32) and pentafluoroethane (R-125) in 1-alkyl-3-methylimidazolium tricyanomethanide ionic liquids
Viar Fernández, Miguel|||0000-0002-4809-0952
Absorption
Hydrofluorocarbon
Ionic liquid
NRTL
Phase equilibrium
Vapor-liquid equilibrium
title_short Solubility of difluoromethane (R-32) and pentafluoroethane (R-125) in 1-alkyl-3-methylimidazolium tricyanomethanide ionic liquids
title_full Solubility of difluoromethane (R-32) and pentafluoroethane (R-125) in 1-alkyl-3-methylimidazolium tricyanomethanide ionic liquids
title_fullStr Solubility of difluoromethane (R-32) and pentafluoroethane (R-125) in 1-alkyl-3-methylimidazolium tricyanomethanide ionic liquids
title_full_unstemmed Solubility of difluoromethane (R-32) and pentafluoroethane (R-125) in 1-alkyl-3-methylimidazolium tricyanomethanide ionic liquids
title_sort Solubility of difluoromethane (R-32) and pentafluoroethane (R-125) in 1-alkyl-3-methylimidazolium tricyanomethanide ionic liquids
dc.creator.none.fl_str_mv Viar Fernández, Miguel|||0000-0002-4809-0952
Asensio Delgado, Salvador|||0000-0002-0722-6139
Pardo Pardo, Fernando|||0000-0001-9821-0310
Zarca Lago, Gabriel|||0000-0002-4072-4252
Urtiaga Mendia, Ana María|||0000-0002-8189-9171
author Viar Fernández, Miguel|||0000-0002-4809-0952
author_facet Viar Fernández, Miguel|||0000-0002-4809-0952
Asensio Delgado, Salvador|||0000-0002-0722-6139
Pardo Pardo, Fernando|||0000-0001-9821-0310
Zarca Lago, Gabriel|||0000-0002-4072-4252
Urtiaga Mendia, Ana María|||0000-0002-8189-9171
author_role author
author2 Asensio Delgado, Salvador|||0000-0002-0722-6139
Pardo Pardo, Fernando|||0000-0001-9821-0310
Zarca Lago, Gabriel|||0000-0002-4072-4252
Urtiaga Mendia, Ana María|||0000-0002-8189-9171
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
dc.subject.none.fl_str_mv Absorption
Hydrofluorocarbon
Ionic liquid
NRTL
Phase equilibrium
Vapor-liquid equilibrium
topic Absorption
Hydrofluorocarbon
Ionic liquid
NRTL
Phase equilibrium
Vapor-liquid equilibrium
description 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.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-02-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10902/30601
url https://hdl.handle.net/10902/30601
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Fluid Phase Equilibria, 2024, 577, 113983
16th International Conference On Properties And Phase Equilibria For Product And Process Design (PPEPPD), La Pineda, Tarragona, 2023
reponame:UCrea Repositorio Abierto de la Universidad de Cantabria
instname:Universidad de Cantabria (UC)
instname_str Universidad de Cantabria (UC)
reponame_str UCrea Repositorio Abierto de la Universidad de Cantabria
collection UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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