Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymer
- Autores
- Falco, Marisa Guadalupe; Retuert, Jaime; Hidrobo, Alexis; Covarrubias, Cristian; Araya, Paulo; Sedran, Ulises Anselmo
- Año de publicación
- 2009
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Mesoporous amorphous silica-aluminas were synthesised with standard aluminium and silicon sources by means of the formation of inorganic-organic composites with the addition of chitosan biopolymer, and compared to analogous catalysts synthesised conventionally. Some catalysts were subjected to hydrothermal treatment. The resulting specific surface areas were from 480 to 573 m2/g in the untreated samples and 300-430 m2/g in the hydrotreated catalysts, average pore sizes ranging from 32 to 100 Å with sharp, unimodal distributions. The chitosan materials showed higher specific surface areas and larger pore sizes than those of their non-chitosan counterparts. The most important differences in the acidic properties were in the relationships between tetrahedral and octahedral aluminium atoms, the chitosan materials having higher relative amounts of tetrahedral aluminium than the conventional silica-aluminas. Evidences of stabilization in the physical and chemical properties were observed in the chitosan-containing catalysts. The catalytic performance was evaluated with the conversion of tri-isopropylbenzene at 400 °C, to assess activity and accessibility, and cyclohexene at 300 °C, to assess hydrogen transfer properties. The highest activity and accessibility was observed in the hydrotreated, chitosan-containing catalyst, while hydrogen transfer capabilities were similar to those of medium unit cell sizes, equilibrium commercial FCC catalysts.
Fil: Falco, Marisa Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Retuert, Jaime. Universidad de Chile; Chile
Fil: Hidrobo, Alexis. Universidad de Chile; Chile
Fil: Covarrubias, Cristian. Universidad de Chile; Chile
Fil: Araya, Paulo. Universidad de Chile; Chile
Fil: Sedran, Ulises Anselmo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina - Materia
-
Silica-Alumina
Chitosan
Fcc - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/57143
Ver los metadatos del registro completo
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Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymerFalco, Marisa GuadalupeRetuert, JaimeHidrobo, AlexisCovarrubias, CristianAraya, PauloSedran, Ulises AnselmoSilica-AluminaChitosanFcchttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Mesoporous amorphous silica-aluminas were synthesised with standard aluminium and silicon sources by means of the formation of inorganic-organic composites with the addition of chitosan biopolymer, and compared to analogous catalysts synthesised conventionally. Some catalysts were subjected to hydrothermal treatment. The resulting specific surface areas were from 480 to 573 m2/g in the untreated samples and 300-430 m2/g in the hydrotreated catalysts, average pore sizes ranging from 32 to 100 Å with sharp, unimodal distributions. The chitosan materials showed higher specific surface areas and larger pore sizes than those of their non-chitosan counterparts. The most important differences in the acidic properties were in the relationships between tetrahedral and octahedral aluminium atoms, the chitosan materials having higher relative amounts of tetrahedral aluminium than the conventional silica-aluminas. Evidences of stabilization in the physical and chemical properties were observed in the chitosan-containing catalysts. The catalytic performance was evaluated with the conversion of tri-isopropylbenzene at 400 °C, to assess activity and accessibility, and cyclohexene at 300 °C, to assess hydrogen transfer properties. The highest activity and accessibility was observed in the hydrotreated, chitosan-containing catalyst, while hydrogen transfer capabilities were similar to those of medium unit cell sizes, equilibrium commercial FCC catalysts.Fil: Falco, Marisa Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaFil: Retuert, Jaime. Universidad de Chile; ChileFil: Hidrobo, Alexis. Universidad de Chile; ChileFil: Covarrubias, Cristian. Universidad de Chile; ChileFil: Araya, Paulo. Universidad de Chile; ChileFil: Sedran, Ulises Anselmo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaElsevier Science2009-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/57143Falco, Marisa Guadalupe; Retuert, Jaime; Hidrobo, Alexis; Covarrubias, Cristian; Araya, Paulo; et al.; Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymer; Elsevier Science; Applied Catalysis A: General; 366; 2; 9-2009; 269-2740926-860XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2009.07.012info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:53:32Zoai:ri.conicet.gov.ar:11336/57143instacron: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:34982025-10-15 14:53:33.215CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymer |
title |
Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymer |
spellingShingle |
Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymer Falco, Marisa Guadalupe Silica-Alumina Chitosan Fcc |
title_short |
Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymer |
title_full |
Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymer |
title_fullStr |
Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymer |
title_full_unstemmed |
Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymer |
title_sort |
Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymer |
dc.creator.none.fl_str_mv |
Falco, Marisa Guadalupe Retuert, Jaime Hidrobo, Alexis Covarrubias, Cristian Araya, Paulo Sedran, Ulises Anselmo |
author |
Falco, Marisa Guadalupe |
author_facet |
Falco, Marisa Guadalupe Retuert, Jaime Hidrobo, Alexis Covarrubias, Cristian Araya, Paulo Sedran, Ulises Anselmo |
author_role |
author |
author2 |
Retuert, Jaime Hidrobo, Alexis Covarrubias, Cristian Araya, Paulo Sedran, Ulises Anselmo |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Silica-Alumina Chitosan Fcc |
topic |
Silica-Alumina Chitosan Fcc |
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 amorphous silica-aluminas were synthesised with standard aluminium and silicon sources by means of the formation of inorganic-organic composites with the addition of chitosan biopolymer, and compared to analogous catalysts synthesised conventionally. Some catalysts were subjected to hydrothermal treatment. The resulting specific surface areas were from 480 to 573 m2/g in the untreated samples and 300-430 m2/g in the hydrotreated catalysts, average pore sizes ranging from 32 to 100 Å with sharp, unimodal distributions. The chitosan materials showed higher specific surface areas and larger pore sizes than those of their non-chitosan counterparts. The most important differences in the acidic properties were in the relationships between tetrahedral and octahedral aluminium atoms, the chitosan materials having higher relative amounts of tetrahedral aluminium than the conventional silica-aluminas. Evidences of stabilization in the physical and chemical properties were observed in the chitosan-containing catalysts. The catalytic performance was evaluated with the conversion of tri-isopropylbenzene at 400 °C, to assess activity and accessibility, and cyclohexene at 300 °C, to assess hydrogen transfer properties. The highest activity and accessibility was observed in the hydrotreated, chitosan-containing catalyst, while hydrogen transfer capabilities were similar to those of medium unit cell sizes, equilibrium commercial FCC catalysts. Fil: Falco, Marisa Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina Fil: Retuert, Jaime. Universidad de Chile; Chile Fil: Hidrobo, Alexis. Universidad de Chile; Chile Fil: Covarrubias, Cristian. Universidad de Chile; Chile Fil: Araya, Paulo. Universidad de Chile; Chile Fil: Sedran, Ulises Anselmo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina |
description |
Mesoporous amorphous silica-aluminas were synthesised with standard aluminium and silicon sources by means of the formation of inorganic-organic composites with the addition of chitosan biopolymer, and compared to analogous catalysts synthesised conventionally. Some catalysts were subjected to hydrothermal treatment. The resulting specific surface areas were from 480 to 573 m2/g in the untreated samples and 300-430 m2/g in the hydrotreated catalysts, average pore sizes ranging from 32 to 100 Å with sharp, unimodal distributions. The chitosan materials showed higher specific surface areas and larger pore sizes than those of their non-chitosan counterparts. The most important differences in the acidic properties were in the relationships between tetrahedral and octahedral aluminium atoms, the chitosan materials having higher relative amounts of tetrahedral aluminium than the conventional silica-aluminas. Evidences of stabilization in the physical and chemical properties were observed in the chitosan-containing catalysts. The catalytic performance was evaluated with the conversion of tri-isopropylbenzene at 400 °C, to assess activity and accessibility, and cyclohexene at 300 °C, to assess hydrogen transfer properties. The highest activity and accessibility was observed in the hydrotreated, chitosan-containing catalyst, while hydrogen transfer capabilities were similar to those of medium unit cell sizes, equilibrium commercial FCC catalysts. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-09 |
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/11336/57143 Falco, Marisa Guadalupe; Retuert, Jaime; Hidrobo, Alexis; Covarrubias, Cristian; Araya, Paulo; et al.; Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymer; Elsevier Science; Applied Catalysis A: General; 366; 2; 9-2009; 269-274 0926-860X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/57143 |
identifier_str_mv |
Falco, Marisa Guadalupe; Retuert, Jaime; Hidrobo, Alexis; Covarrubias, Cristian; Araya, Paulo; et al.; Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymer; Elsevier Science; Applied Catalysis A: General; 366; 2; 9-2009; 269-274 0926-860X 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.apcata.2009.07.012 |
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 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 |
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1846083066544521216 |
score |
13.22299 |