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dc.contributor.author
Pedernera, Marisa Noemi
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dc.contributor.author
de la Iglesia, Oscar
dc.contributor.author
Mallada, Reyes
dc.contributor.author
Lin, Z.
dc.contributor.author
Rocha, J.
dc.contributor.author
Coronas, Joaquín
dc.contributor.author
Santamaría, Jesús
dc.date.available
2018-10-01T21:28:16Z
dc.date.issued
2009-01
dc.identifier.citation
Pedernera, Marisa Noemi; de la Iglesia, Oscar; Mallada, Reyes; Lin, Z.; Rocha, J.; et al.; Preparation of stable MCM-48 tubular membranes; Elsevier Science; Journal of Membrane Science; 326; 1; 1-2009; 137-144
dc.identifier.issn
0376-7388
dc.identifier.uri
http://hdl.handle.net/11336/61459
dc.description.abstract
Stable mesoporous membranes with a cubic structure, based on the MCM-48 material, were successfully prepared on alumina supports by hydrothermal synthesis, starting from sols having both CTABr and TPAOH structure directing agents. The inclusion of a zeolite (MFI-type) precursor during membrane synthesis led to partial zeolite incorporation into the porous structure, giving rise to a hydrothermally stable membrane. The mean pore diameter of the membrane was 2.5 nm, and permeation experiments confirmed that transport across the membrane was governed by Knudsen diffusion and that there were no pinholes. The hydrothermal stability of conventionally prepared (MCM-48) and partly zeolitized (MCMZ) powders was studied. Unlike MCM-48 samples (whose surface area sharply decreased after the hydrothermal treatment), the MCMZ surface area remained constant (1031 m2/g before and 1009 m2/g after the hydrothermal treatment), indicating a high hydrothermal stability. MCMZ membranes were tested in the gas phase separation of binary organic (cyclohexane, benzene and n-hexane)/O2 mixtures. A maximum selectivity of 124 was obtained for the separation of cyclohexane/O2 mixtures. The selective permeation of the organic compound was made possible by specific interactions between the organic molecules and the mesoporous host materials, and/or by capillary condensation within the membrane pores.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Hydrothermal Stability
dc.subject
Mcm-48
dc.subject
Mesoporous Membranes
dc.subject
Organic/Permanent Gas Separation
dc.subject
Zeolite
dc.subject.classification
Otras Ingeniería Química
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dc.subject.classification
Ingeniería Química
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Preparation of stable MCM-48 tubular membranes
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-30T14:55:07Z
dc.journal.volume
326
dc.journal.number
1
dc.journal.pagination
137-144
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Pedernera, Marisa Noemi. 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: de la Iglesia, Oscar. Universidad de Zaragoza; España
dc.description.fil
Fil: Mallada, Reyes. Universidad de Zaragoza; España
dc.description.fil
Fil: Lin, Z.. Universidade de Aveiro; Portugal
dc.description.fil
Fil: Rocha, J.. Universidade de Aveiro; Portugal
dc.description.fil
Fil: Coronas, Joaquín. Universidad de Zaragoza; España
dc.description.fil
Fil: Santamaría, Jesús. Universidad de Zaragoza; España
dc.journal.title
Journal of Membrane Science
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.memsci.2008.09.050
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0376738808008752
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