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    Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/21902

    Título
    Helium Recovery by Membrane Gas Separation Using Poly(o‑acyloxyamide)s
    Autor
    Díez, Blanca
    Cuadrado Curto, PurificaciónAutoridad UVA Orcid
    Marcos Fernández, Ángel
    Prádanos del Pico, Pedro LourdesAutoridad UVA Orcid
    Tena Matias, AlbertoAutoridad UVA Orcid
    Palacio Martínez, LauraAutoridad UVA Orcid
    Lozano, Ángel E.
    Hernández Giménez, AntonioAutoridad UVA Orcid
    Año del Documento
    2014
    Editorial
    Elsevier
    Descripción
    Producción Científica
    Documento Fuente
    Industrial and Engineering Chemistry Research , 2014, 53 (32), pp 12809–12818
    Zusammenfassung
    Poly(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.
    Materias (normalizadas)
    Helium Recovery
    Membrane Gas Separation
    ISSN
    0014-3057
    Revisión por pares
    SI
    DOI
    10.1021/ie501649b
    Patrocinador
    Junta de Castilla y León (programa de apoyo a proyectos de investigación – Ref. VA302U13)
    Version del Editor
    https://www.journals.elsevier.com/european-polymer-journal/
    Idioma
    eng
    URI
    http://uvadoc.uva.es/handle/10324/21902
    Derechos
    openAccess
    Aparece en las colecciones
    • DEP31 - Artículos de revista [168]
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    PREV-07-IECR-53-12809-12818-2014.pdf
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