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Design of Ionic Liquids for Fluorinated Gas Absorption

2022-05-03Artigo científico Acesso aberto
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dc.contributor.authorSosa, Júlio E.
dc.contributor.authorSantiago, Rubén
dc.contributor.authorRedondo, Andres E.
dc.contributor.authorAvila, Jocasta
dc.contributor.authorLepre, Luiz F.
dc.contributor.authorGomes, Margarida Costa
dc.contributor.authorAraújo, João M. M.
dc.contributor.authorPalomar, José
dc.contributor.authorPereiro, Ana B.
dc.contributor.institutionDQ - Departamento de Química
dc.contributor.institutionLAQV@REQUIMTE
dc.contributor.pblACS - American Chemical Society
dc.date.accessioned2022-09-30T22:35:25Z
dc.date.available2022-09-30T22:35:25Z
dc.date.issued2022-05-03
dc.descriptionFunding Information: This work was also supported by Associate Laboratory for Green Chemistry–LAQV, financed by national funds from FCT/MCTES (UID/QUI/50006/2020), the contracts of Individual Call to Scientific Employment Stimulus 2020.00835.CEECIND (J.M.M.A.)/2021.01432.CEECIND (A.B.P.) and by FCT/MCTES (Portugal) through the project PTDC/EQU-EQU/29737/2017. The authors thank Solvay for providing the ionic liquid tri(butyl) ethylphosphonium diethylphosphate. M.C.G. and J.A. thank IDEX-LYON for financial support (Programme Investissement d’Avenir ANR-16-IDEX-0005). Publisher Copyright: © 2022 American Chemical Society. All rights reserved.
dc.description.abstractIn recent years, the fight against climate change and the mitigation of the impact of fluorinated gases (F-gases) on the atmosphere is a global concern. Development of technologies that help to efficiently separate and recycle hydrofluorocarbons (HFCs) at the end of the refrigeration and air conditioning equipment life is a priority. The technological development is important to stimulate the F-gas capture, specifically difluoromethane (R-32) and 1,1,1,2-tetrafluoroethane (R-134a), due to their high global warming potential. In this work, the COSMO-RS method is used to analyze the solute-solvent interactions and to determine Henry's constants of R-32 and R-134a in more than 600 ionic liquids. The three most performant ionic liquids were selected on the basis of COSMO-RS calculations, and F-gas absorption equilibrium isotherms were measured using gravimetric and volumetric methods. Experimental results are in good agreement with COSMO-RS predictions, with the ionic liquid tributyl(ethyl)phosphonium diethyl phosphate, [P2444][C2C2PO4], being the salt presenting the highest absorption capacities in molar and mass units compared to salts previously tested. The other two ionic liquids selected, trihexyltetradecylphosphonium glycinate, [P66614][C2NO2], and trihexyl(tetradecyl)phosphonium 2-cyano-pyrrole, [P66614][CNPyr], may be competitive as far as their absorption capacities are concerned. Future works will be guided on evaluating the performance of these ionic liquids at an industrial scale by means of process simulations, in order to elucidate the role in process efficiency of other relevant absorbent properties such as viscosity, molar weight, or specific heat.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent11
dc.format.extent2220127
dc.identifier.doi10.1021/acs.est.2c00051
dc.identifier.issn0013-936X
dc.identifier.otherPURE: 43781320
dc.identifier.otherPURE UUID: 0fa60aee-b5db-4247-89d5-0ce284d1605f
dc.identifier.otherScopus: 85128812707
dc.identifier.otherPubMed: 35435682
dc.identifier.otherWOS: 000798709200058
dc.identifier.otherPubMedCentral: PMC9069701
dc.identifier.otherORCID: /0000-0002-8648-7539/work/120011295
dc.identifier.urihttp://hdl.handle.net/10362/144417
dc.identifier.urlhttps://www.scopus.com/pages/publications/85128812707
dc.language.isoeng
dc.peerreviewedyes
dc.subjectabsorption processes
dc.subjectCOSMO-RS
dc.subjectfluorinated gases
dc.subjectgreenhouse gases
dc.subjectionic liquids
dc.subjectGeneral Chemistry
dc.subjectEnvironmental Chemistry
dc.subjectSDG 13 - Climate Action
dc.titleDesign of Ionic Liquids for Fluorinated Gas Absorptionen
dc.title.subtitleCOSMO-RS Selection and Solubility Experimentsen
dc.typejournal article
degois.publication.firstPage5898
degois.publication.issue9
degois.publication.lastPage5909
degois.publication.titleEnvironmental Science and Technology
degois.publication.volume56
dspace.entity.typePublication
rcaap.rightsopenAccess

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