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dc.contributor.author
Lopes, Joana M.
dc.contributor.author
Sánchez, Francisco Adrián
dc.contributor.author
Rodriguez Reartes, Sabrina Belen
dc.contributor.author
Bermejo, M. Dolores
dc.contributor.author
Martín, Ángel
dc.contributor.author
Cocero, María José
dc.date.available
2017-10-06T19:51:11Z
dc.date.issued
2015-07-20
dc.identifier.citation
Lopes, Joana M.; Sánchez, Francisco Adrián; Rodriguez Reartes, Sabrina Belen; Bermejo, M. Dolores; Martín, Ángel; et al.; Melting point depression effect with CO2 in high melting temperature cellulose dissolving ionic liquids: Modeling with group contribution equation of state; Elsevier Science; Journal of Supercritical Fluids; 107; 20-7-2015; 590-604
dc.identifier.issn
0896-8446
dc.identifier.uri
http://hdl.handle.net/11336/26165
dc.description.abstract
Ionic liquids of the alkylmethylimidazolium chloride family are able to solubilize high amount of cellulose and other natural polymers and have very good characteristics for their processing. Nevertheless, they present important disadvantages related to their high melting points and viscosities. Dissolution of carbon dioxide (CO2) can reduce the melting point of these ionic liquids as well as other ones presenting the same problems. In this work, the effect of pressurized carbon dioxide on the melting point depression of some ionic liquids able to dissolve biopolymers was experimentally determined using the first melting point method. Five different ionic liquids were studied in contact with CO2 using a high-pressure visual cell, up to a pressure of 10 MPa. The ILs studied were four ionic liquids with chloride anion coupled with the cations: 1-butyl-3-methylimidazolium, [C4mim]+, 1-ethyl-3-methylimidazolium, [C2mim]+, 1- allyl-3-methylimidazolium, [Amim]+ and 1-(2-hydroxyethyl)-3-methylimidazolium, [C2OHmim]+ and one ammonium-based cation choline [C5H14NO]+ combined with dihydrogen phosphate anion,[H2PO4]−. Melting point depression effect observed for these groups of ionic liquids were around 10K for chloride ILs and went as high as 33.2K for choline dihydrogen phosphate. To correlate the melting point depression of imidazolium chloride ILs, parameters for the Group Contribution Equation of State (GC-EoS) of Skjold-Jørgensen for the liquid phase plus a fugacity expression for solid phases was employed. Experimental data used for the parameterization includes literature data of binary vapor–liquid, liquid–liquid and solid–liquid equilibria, and activity coefficients at infinite dilution. Melting point depression was calculated with an average deviation of 1.7K (0.5%) and a maximum deviation of 4.3K (1.3%).
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Ionic Liquid
dc.subject
Carbon Dioxide
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Melting Point Depression
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Imidazolium Chloride
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Group Contribution
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Otras Ingeniería Química
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Ingeniería Química
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Melting point depression effect with CO2 in high melting temperature cellulose dissolving ionic liquids: Modeling with group contribution equation of state
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-09-25T18:14:14Z
dc.journal.volume
107
dc.journal.pagination
590-604
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Lopes, Joana M.. Universidad de Valladolid. Escuela de Ingenierías Industriales. Departamento de Ingeniería Química y Tecnología del Medio Ambiente.; España
dc.description.fil
Fil: Sánchez, Francisco Adrián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
dc.description.fil
Fil: Rodriguez Reartes, Sabrina Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
dc.description.fil
Fil: Bermejo, M. Dolores. Universidad de Valladolid. Escuela de Ingenierías Industriales. Departamento de Ingeniería Química y Tecnología del Medio Ambiente.; España
dc.description.fil
Fil: Martín, Ángel. Universidad de Valladolid. Escuela de Ingenierías Industriales. Departamento de Ingeniería Química y Tecnología del Medio Ambiente.; España
dc.description.fil
Fil: Cocero, María José. Universidad de Valladolid. Escuela de Ingenierías Industriales. Departamento de Ingeniería Química y Tecnología del Medio Ambiente.; España
dc.journal.title
Journal of Supercritical Fluids
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0896844615300747
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.supflu.2015.07.021
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