Show simple item record

dc.contributor.authorDíez, Blanca
dc.contributor.authorCuadrado Curto, Purificación 
dc.contributor.authorMarcos Fernández, Ángel
dc.contributor.authorPrádanos del Pico, Pedro Lourdes 
dc.contributor.authorTena Matías, Alberto
dc.contributor.authorPalacio Martínez, Laura 
dc.contributor.authorLozano, Ángel E.
dc.contributor.authorHernández Giménez, Antonio 
dc.date.accessioned2016-12-22T09:00:59Z
dc.date.available2016-12-22T09:00:59Z
dc.date.issued2014
dc.identifier.citationIndustrial and Engineering Chemistry Research , 2014, 53 (32), pp 12809–12818es
dc.identifier.issn0014-3057es
dc.identifier.urihttp://uvadoc.uva.es/handle/10324/21902
dc.descriptionProducción Científicaes
dc.description.abstractPoly(o-acyloxyamide)s (PORAs) derived from a poly(o-hydroxyamide) from 2,2′-bis(3-amino-4-hydroxyphenyl)- hexafluoropropane (APAF) diamine, APAF−POHA, have been synthesized and evaluated as gas separation materials. PORAs were synthesized from poly(o-hydroxyamide)s by derivatization of the free OH group with an aliphatic acid dichloride or dianhydride that allowed the introduction of acetyl or pivaloyl groups on their structure. All of them showed low−medium thermal stability due to a degradation of the amide moieties, and most of them (those synthesized from isophthaloyl dichloride (IPC), 2,2′-bis(4-carboxyphenyl) hexafluoropropane dichloride (6FC), and 4,4′-dicarboxydiphenylsulfone dichloride (DPSC)) showed good mechanical properties. The poly(o-acyloxyamide)s synthesized have shown good permselectivities for He/N2 and He/CH4 separations and very good permeability−selectivity balance for He/CO2 separation. The acetyl PORAs showed better permeability versus selectivity balances than the pivaloyl ones. Moreover, selectivity increased while permeability decreased in the sequence 6F-APAF > IP-APAF > DPS-APAF. Intersegmental distances, d-spacing, were shown to decrease along this sequence, obtaining a nice correlation between permeability and d-spacing. For the He/N2 and the He/CH4 pairs of gases, the best permeability−selectivity values are obtained for 6F-APAF-Ac with a He permeability of 33 barrer and selectivities of 84 and 106, respectively. DPS-APAF-Ac gives a He permeability of 13 barrer and a selectivity of 21 for the He/CO2 separation.es
dc.format.mimetypeapplication/pdfes
dc.language.isoenges
dc.publisherElsevieres
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectHelium Recoveryes
dc.subjectMembrane Gas Separationes
dc.titleHelium Recovery by Membrane Gas Separation Using Poly(o‑acyloxyamide)ses
dc.typeinfo:eu-repo/semantics/articlees
dc.identifier.doi10.1021/ie501649bes
dc.relation.publisherversionhttps://www.journals.elsevier.com/european-polymer-journal/es
dc.peerreviewedSIes
dc.description.projectJunta de Castilla y León (programa de apoyo a proyectos de investigación – Ref. VA302U13)es
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record