Melting point depression effect with CO2 in high melting temperature cellulose dissolving ionic liquids. Modeling with group contribution equation of state

Producción Científica

Detalhes bibliográficos
Autores: Lopes, Joana, Sánchez, Francisco A., Rodríguez Reartes, Sabrina Belén, Bermejo Roda, Maria Dolores, Martín Martínez, Ángel, Cocero Alonso, María José
Formato: artículo
Fecha de publicación:2016
País:España
Recursos:Universidad de Valladolid
Repositorio:UVaDOC. Repositorio Documental de la Universidad de Valladolid
OAI Identifier:oai:uvadoc.uva.es:10324/26140
Acesso em linha:https://doi.org/10.1016/j.supflu.2015.07.021
http://uvadoc.uva.es/handle/10324/26140
Access Level:acceso abierto
Palavra-chave:propiedades térmicas
Thermal properties
Ionic liquid
Carbon dioxide
Melting point depression
Imidazolium chlride
Group contribution
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spelling Melting point depression effect with CO2 in high melting temperature cellulose dissolving ionic liquids. Modeling with group contribution equation of stateLopes, JoanaSánchez, Francisco A.Rodríguez Reartes, Sabrina BelénBermejo Roda, Maria DoloresMartín Martínez, ÁngelCocero Alonso, María Josépropiedades térmicasThermal propertiesIonic liquidCarbon dioxideMelting point depressionImidazolium chlrideGroup contributionProducción CientíficaIonic 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 10 K for chloride ILs and went as high as 33.2 K 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 1.7 K (0.5%) and a maximum deviation of 4.3 K (1.3%).Junta de Castilla y León VA295U14Marie Curie Program. Project DoHipMinisterio de Economía. Programa Ramon y Cajal, RyC RYC-2013-13976Consejo Nacional de Investigaciones Cientí- ficas y Técnicas (CONICET)Universidad Nacional del Sur (UNS)Ministerio de Ciencia, Tecnología e Innovación Productiva (MinCyT)Ministry (MINECO) Proyecto CTQ 2011-14825-E (Programa Explora)Elsevier B.V.2016info:eu-repo/semantics/articleapplication/pdfhttps://doi.org/10.1016/j.supflu.2015.07.021http://uvadoc.uva.es/handle/10324/26140reponame:UVaDOC. Repositorio Documental de la Universidad de Valladolidinstname:Universidad de ValladolidIngléshttps://doi.org/10.1016/j.supflu.2015.07.021info:eu-repo/semantics/openAccessoai:uvadoc.uva.es:10324/261402026-06-13T12:44:47Z
dc.title.none.fl_str_mv Melting point depression effect with CO2 in high melting temperature cellulose dissolving ionic liquids. Modeling with group contribution equation of state
title Melting point depression effect with CO2 in high melting temperature cellulose dissolving ionic liquids. Modeling with group contribution equation of state
spellingShingle Melting point depression effect with CO2 in high melting temperature cellulose dissolving ionic liquids. Modeling with group contribution equation of state
Lopes, Joana
propiedades térmicas
Thermal properties
Ionic liquid
Carbon dioxide
Melting point depression
Imidazolium chlride
Group contribution
title_short Melting point depression effect with CO2 in high melting temperature cellulose dissolving ionic liquids. Modeling with group contribution equation of state
title_full Melting point depression effect with CO2 in high melting temperature cellulose dissolving ionic liquids. Modeling with group contribution equation of state
title_fullStr Melting point depression effect with CO2 in high melting temperature cellulose dissolving ionic liquids. Modeling with group contribution equation of state
title_full_unstemmed Melting point depression effect with CO2 in high melting temperature cellulose dissolving ionic liquids. Modeling with group contribution equation of state
title_sort Melting point depression effect with CO2 in high melting temperature cellulose dissolving ionic liquids. Modeling with group contribution equation of state
dc.creator.none.fl_str_mv Lopes, Joana
Sánchez, Francisco A.
Rodríguez Reartes, Sabrina Belén
Bermejo Roda, Maria Dolores
Martín Martínez, Ángel
Cocero Alonso, María José
author Lopes, Joana
author_facet Lopes, Joana
Sánchez, Francisco A.
Rodríguez Reartes, Sabrina Belén
Bermejo Roda, Maria Dolores
Martín Martínez, Ángel
Cocero Alonso, María José
author_role author
author2 Sánchez, Francisco A.
Rodríguez Reartes, Sabrina Belén
Bermejo Roda, Maria Dolores
Martín Martínez, Ángel
Cocero Alonso, María José
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv propiedades térmicas
Thermal properties
Ionic liquid
Carbon dioxide
Melting point depression
Imidazolium chlride
Group contribution
topic propiedades térmicas
Thermal properties
Ionic liquid
Carbon dioxide
Melting point depression
Imidazolium chlride
Group contribution
description Producción Científica
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.supflu.2015.07.021
http://uvadoc.uva.es/handle/10324/26140
url https://doi.org/10.1016/j.supflu.2015.07.021
http://uvadoc.uva.es/handle/10324/26140
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.supflu.2015.07.021
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv reponame:UVaDOC. Repositorio Documental de la Universidad de Valladolid
instname:Universidad de Valladolid
instname_str Universidad de Valladolid
reponame_str UVaDOC. Repositorio Documental de la Universidad de Valladolid
collection UVaDOC. Repositorio Documental de la Universidad de Valladolid
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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