Mesoporous titania: Effect of thermal treatment on the texture and acidic properties

Autores
Pizzio, Luis Rene
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Mesoporous titania materials have been synthesized by using urea as low cost template via sol-gel reactions of titaniumisopropoxide, followed by removing the urea by extraction with water. They were characterized by FT-IR, XRD, DTA-TGA and BET. The SBET of the solids increases with the increase of the urea content and decreases with the increase of the calcination temperature. The XRD patterns of the samples exhibit only the characteristic peaks of the anatase phase. The crystallinity increased when the temperature went up. The acidic characteristics of the samples were evaluated by TPD and DRIFTS of adsorbed pyridine. The total amount of pyridine adsorbed decreases in parallel with the increase of the calcination temperature. The samples displayed two types of Lewis acid sites, with which pyridine interacts via coordination bonding. © 2004 Elsevier B.V. All rights reserved.
Fil: Pizzio, Luis Rene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Materia
Catalysts
Mesoporous
Sol-Gel Preparation
Thermal Properties
Titania
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/57710
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/57710
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Mesoporous titania: Effect of thermal treatment on the texture and acidic propertiesPizzio, Luis ReneCatalystsMesoporousSol-Gel PreparationThermal PropertiesTitaniahttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Mesoporous titania materials have been synthesized by using urea as low cost template via sol-gel reactions of titaniumisopropoxide, followed by removing the urea by extraction with water. They were characterized by FT-IR, XRD, DTA-TGA and BET. The SBET of the solids increases with the increase of the urea content and decreases with the increase of the calcination temperature. The XRD patterns of the samples exhibit only the characteristic peaks of the anatase phase. The crystallinity increased when the temperature went up. The acidic characteristics of the samples were evaluated by TPD and DRIFTS of adsorbed pyridine. The total amount of pyridine adsorbed decreases in parallel with the increase of the calcination temperature. The samples displayed two types of Lewis acid sites, with which pyridine interacts via coordination bonding. © 2004 Elsevier B.V. All rights reserved.Fil: Pizzio, Luis Rene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaElsevier Science2005-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/57710Pizzio, Luis Rene; Mesoporous titania: Effect of thermal treatment on the texture and acidic properties; Elsevier Science; Materials Letters; 59; 8-9; 4-2005; 994-9970167-577XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.matlet.2004.11.045info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0167577X04009280info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:52:03Zoai:ri.conicet.gov.ar:11336/57710instacron: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:34982025-09-03 09:52:04.185CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Mesoporous titania: Effect of thermal treatment on the texture and acidic properties
title Mesoporous titania: Effect of thermal treatment on the texture and acidic properties
spellingShingle Mesoporous titania: Effect of thermal treatment on the texture and acidic properties
Pizzio, Luis Rene
Catalysts
Mesoporous
Sol-Gel Preparation
Thermal Properties
Titania
title_short Mesoporous titania: Effect of thermal treatment on the texture and acidic properties
title_full Mesoporous titania: Effect of thermal treatment on the texture and acidic properties
title_fullStr Mesoporous titania: Effect of thermal treatment on the texture and acidic properties
title_full_unstemmed Mesoporous titania: Effect of thermal treatment on the texture and acidic properties
title_sort Mesoporous titania: Effect of thermal treatment on the texture and acidic properties
dc.creator.none.fl_str_mv Pizzio, Luis Rene
author Pizzio, Luis Rene
author_facet Pizzio, Luis Rene
author_role author
dc.subject.none.fl_str_mv Catalysts
Mesoporous
Sol-Gel Preparation
Thermal Properties
Titania
topic Catalysts
Mesoporous
Sol-Gel Preparation
Thermal Properties
Titania
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Mesoporous titania materials have been synthesized by using urea as low cost template via sol-gel reactions of titaniumisopropoxide, followed by removing the urea by extraction with water. They were characterized by FT-IR, XRD, DTA-TGA and BET. The SBET of the solids increases with the increase of the urea content and decreases with the increase of the calcination temperature. The XRD patterns of the samples exhibit only the characteristic peaks of the anatase phase. The crystallinity increased when the temperature went up. The acidic characteristics of the samples were evaluated by TPD and DRIFTS of adsorbed pyridine. The total amount of pyridine adsorbed decreases in parallel with the increase of the calcination temperature. The samples displayed two types of Lewis acid sites, with which pyridine interacts via coordination bonding. © 2004 Elsevier B.V. All rights reserved.
Fil: Pizzio, Luis Rene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
description Mesoporous titania materials have been synthesized by using urea as low cost template via sol-gel reactions of titaniumisopropoxide, followed by removing the urea by extraction with water. They were characterized by FT-IR, XRD, DTA-TGA and BET. The SBET of the solids increases with the increase of the urea content and decreases with the increase of the calcination temperature. The XRD patterns of the samples exhibit only the characteristic peaks of the anatase phase. The crystallinity increased when the temperature went up. The acidic characteristics of the samples were evaluated by TPD and DRIFTS of adsorbed pyridine. The total amount of pyridine adsorbed decreases in parallel with the increase of the calcination temperature. The samples displayed two types of Lewis acid sites, with which pyridine interacts via coordination bonding. © 2004 Elsevier B.V. All rights reserved.
publishDate 2005
dc.date.none.fl_str_mv 2005-04
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/11336/57710
Pizzio, Luis Rene; Mesoporous titania: Effect of thermal treatment on the texture and acidic properties; Elsevier Science; Materials Letters; 59; 8-9; 4-2005; 994-997
0167-577X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/57710
identifier_str_mv Pizzio, Luis Rene; Mesoporous titania: Effect of thermal treatment on the texture and acidic properties; Elsevier Science; Materials Letters; 59; 8-9; 4-2005; 994-997
0167-577X
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.matlet.2004.11.045
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0167577X04009280
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/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_ 1842269133978206208
score 13.13397

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