Preparation of stable MCM-48 tubular membranes

Autores
Pedernera, Marisa Noemi; de la Iglesia, Oscar; Mallada, Reyes; Lin, Z.; Rocha, J.; Coronas, Joaquín; Santamaría, Jesús
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
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
Fil: de la Iglesia, Oscar. Universidad de Zaragoza; España
Fil: Mallada, Reyes. Universidad de Zaragoza; España
Fil: Lin, Z.. Universidade de Aveiro; Portugal
Fil: Rocha, J.. Universidade de Aveiro; Portugal
Fil: Coronas, Joaquín. Universidad de Zaragoza; España
Fil: Santamaría, Jesús. Universidad de Zaragoza; España
Materia
Hydrothermal Stability
Mcm-48
Mesoporous Membranes
Organic/Permanent Gas Separation
Zeolite
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/61459
Acceder
id CONICETDig_3e45d9457eb1b1eb60dac1ce4ac92847
oai_identifier_str oai:ri.conicet.gov.ar:11336/61459
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Preparation of stable MCM-48 tubular membranesPedernera, Marisa Noemide la Iglesia, OscarMallada, ReyesLin, Z.Rocha, J.Coronas, JoaquínSantamaría, JesúsHydrothermal StabilityMcm-48Mesoporous MembranesOrganic/Permanent Gas SeparationZeolitehttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Stable 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.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; ArgentinaFil: de la Iglesia, Oscar. Universidad de Zaragoza; EspañaFil: Mallada, Reyes. Universidad de Zaragoza; EspañaFil: Lin, Z.. Universidade de Aveiro; PortugalFil: Rocha, J.. Universidade de Aveiro; PortugalFil: Coronas, Joaquín. Universidad de Zaragoza; EspañaFil: Santamaría, Jesús. Universidad de Zaragoza; EspañaElsevier Science2009-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/61459Pedernera, 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; 137-1440376-7388CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.memsci.2008.09.050info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0376738808008752info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:38:49Zoai:ri.conicet.gov.ar:11336/61459instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:38:49.352CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Preparation of stable MCM-48 tubular membranes
title Preparation of stable MCM-48 tubular membranes
spellingShingle Preparation of stable MCM-48 tubular membranes
Pedernera, Marisa Noemi
Hydrothermal Stability
Mcm-48
Mesoporous Membranes
Organic/Permanent Gas Separation
Zeolite
title_short Preparation of stable MCM-48 tubular membranes
title_full Preparation of stable MCM-48 tubular membranes
title_fullStr Preparation of stable MCM-48 tubular membranes
title_full_unstemmed Preparation of stable MCM-48 tubular membranes
title_sort Preparation of stable MCM-48 tubular membranes
dc.creator.none.fl_str_mv Pedernera, Marisa Noemi
de la Iglesia, Oscar
Mallada, Reyes
Lin, Z.
Rocha, J.
Coronas, Joaquín
Santamaría, Jesús
author Pedernera, Marisa Noemi
author_facet Pedernera, Marisa Noemi
de la Iglesia, Oscar
Mallada, Reyes
Lin, Z.
Rocha, J.
Coronas, Joaquín
Santamaría, Jesús
author_role author
author2 de la Iglesia, Oscar
Mallada, Reyes
Lin, Z.
Rocha, J.
Coronas, Joaquín
Santamaría, Jesús
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Hydrothermal Stability
Mcm-48
Mesoporous Membranes
Organic/Permanent Gas Separation
Zeolite
topic Hydrothermal Stability
Mcm-48
Mesoporous Membranes
Organic/Permanent Gas Separation
Zeolite
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv 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.
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
Fil: de la Iglesia, Oscar. Universidad de Zaragoza; España
Fil: Mallada, Reyes. Universidad de Zaragoza; España
Fil: Lin, Z.. Universidade de Aveiro; Portugal
Fil: Rocha, J.. Universidade de Aveiro; Portugal
Fil: Coronas, Joaquín. Universidad de Zaragoza; España
Fil: Santamaría, Jesús. Universidad de Zaragoza; España
description 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.
publishDate 2009
dc.date.none.fl_str_mv 2009-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/61459
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
0376-7388
CONICET Digital
CONICET
url http://hdl.handle.net/11336/61459
identifier_str_mv 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
0376-7388
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.memsci.2008.09.050
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0376738808008752
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844614412120358912
score 13.070432

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