A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites

Autores
Possato, Luiz Gustavo; Diniz, Rosiane N.; Garetto, Teresita Francisca; Pulcinelli, Sandra H.; Santilli, Celso V.; Martins, Leandro
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The catalytic properties of monomodal microporous and bimodal micro-mesoporous zeolites were investigated in the gas-phase dehydration of glycerol. The desilication methodology used to produce the mesoporous zeolites minimized diffusion limitations and increased glycerol conversion in the catalytic reaction due to the hierarchical system of secondary pores created in the zeolite crystals. The chemical and structural properties of the catalyst were studied by X-ray diffraction, nitrogen adsorption?desorption isotherms, NH3-TPD and pyridine chemisorption followed by IR-spectroscopy. Although the aim was to desilicate to create mesoporosity in the zeolite crystals, the desilication promoted the formation of extra-framework aluminum species that affected the conversion of glycerol and the products distribution. The results clearly show that the mesoporous zeolites with designed mesopore structure allowed a rapid diffusion and consequently improved the reaction kinetics. However, especial attention must be given to the desilication procedure because the severity of the treatment negatively interfered on the Brønsted and Lewis acid sites relative concentration and, consequently, in the efficiency of the catalysis performed by these materials. On the other hand, during the catalytic reaction, the intracrystalline mesopores allowed carbonaceous compounds to be deposited herein, resulting in less blocked micropores and catalysts with higher long-term stability.
Fil: Possato, Luiz Gustavo. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Diniz, Rosiane N.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Garetto, Teresita Francisca. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones En Catalisis y Petroquímica "ing. Jose Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones En Catalisis y Petroquímica "ing. Jose Miguel Parera"; Argentina
Fil: Pulcinelli, Sandra H.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Santilli, Celso V.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Martins, Leandro. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Materia
Mesoporous Materials
Zeolites
Glycerol Dehydration
Acrolein
Deactivation
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:11336/21234
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/21234
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolitesPossato, Luiz GustavoDiniz, Rosiane N.Garetto, Teresita FranciscaPulcinelli, Sandra H.Santilli, Celso V.Martins, LeandroMesoporous MaterialsZeolitesGlycerol DehydrationAcroleinDeactivationhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The catalytic properties of monomodal microporous and bimodal micro-mesoporous zeolites were investigated in the gas-phase dehydration of glycerol. The desilication methodology used to produce the mesoporous zeolites minimized diffusion limitations and increased glycerol conversion in the catalytic reaction due to the hierarchical system of secondary pores created in the zeolite crystals. The chemical and structural properties of the catalyst were studied by X-ray diffraction, nitrogen adsorption?desorption isotherms, NH3-TPD and pyridine chemisorption followed by IR-spectroscopy. Although the aim was to desilicate to create mesoporosity in the zeolite crystals, the desilication promoted the formation of extra-framework aluminum species that affected the conversion of glycerol and the products distribution. The results clearly show that the mesoporous zeolites with designed mesopore structure allowed a rapid diffusion and consequently improved the reaction kinetics. However, especial attention must be given to the desilication procedure because the severity of the treatment negatively interfered on the Brønsted and Lewis acid sites relative concentration and, consequently, in the efficiency of the catalysis performed by these materials. On the other hand, during the catalytic reaction, the intracrystalline mesopores allowed carbonaceous compounds to be deposited herein, resulting in less blocked micropores and catalysts with higher long-term stability.Fil: Possato, Luiz Gustavo. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Diniz, Rosiane N.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Garetto, Teresita Francisca. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones En Catalisis y Petroquímica "ing. Jose Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones En Catalisis y Petroquímica "ing. Jose Miguel Parera"; ArgentinaFil: Pulcinelli, Sandra H.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Santilli, Celso V.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Martins, Leandro. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilElsevier2013-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21234Possato, Luiz Gustavo; Diniz, Rosiane N.; Garetto, Teresita Francisca; Pulcinelli, Sandra H.; Santilli, Celso V.; et al.; A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites; Elsevier; Journal of Catalysis; 300; 4-2013; 102-1120021-9517CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jcat.2013.01.003info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0021951713000055info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:24:13Zoai:ri.conicet.gov.ar:11336/21234instacron: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 14:24:13.704CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites
title A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites
spellingShingle A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites
Possato, Luiz Gustavo
Mesoporous Materials
Zeolites
Glycerol Dehydration
Acrolein
Deactivation
title_short A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites
title_full A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites
title_fullStr A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites
title_full_unstemmed A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites
title_sort A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites
dc.creator.none.fl_str_mv Possato, Luiz Gustavo
Diniz, Rosiane N.
Garetto, Teresita Francisca
Pulcinelli, Sandra H.
Santilli, Celso V.
Martins, Leandro
author Possato, Luiz Gustavo
author_facet Possato, Luiz Gustavo
Diniz, Rosiane N.
Garetto, Teresita Francisca
Pulcinelli, Sandra H.
Santilli, Celso V.
Martins, Leandro
author_role author
author2 Diniz, Rosiane N.
Garetto, Teresita Francisca
Pulcinelli, Sandra H.
Santilli, Celso V.
Martins, Leandro
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Mesoporous Materials
Zeolites
Glycerol Dehydration
Acrolein
Deactivation
topic Mesoporous Materials
Zeolites
Glycerol Dehydration
Acrolein
Deactivation
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The catalytic properties of monomodal microporous and bimodal micro-mesoporous zeolites were investigated in the gas-phase dehydration of glycerol. The desilication methodology used to produce the mesoporous zeolites minimized diffusion limitations and increased glycerol conversion in the catalytic reaction due to the hierarchical system of secondary pores created in the zeolite crystals. The chemical and structural properties of the catalyst were studied by X-ray diffraction, nitrogen adsorption?desorption isotherms, NH3-TPD and pyridine chemisorption followed by IR-spectroscopy. Although the aim was to desilicate to create mesoporosity in the zeolite crystals, the desilication promoted the formation of extra-framework aluminum species that affected the conversion of glycerol and the products distribution. The results clearly show that the mesoporous zeolites with designed mesopore structure allowed a rapid diffusion and consequently improved the reaction kinetics. However, especial attention must be given to the desilication procedure because the severity of the treatment negatively interfered on the Brønsted and Lewis acid sites relative concentration and, consequently, in the efficiency of the catalysis performed by these materials. On the other hand, during the catalytic reaction, the intracrystalline mesopores allowed carbonaceous compounds to be deposited herein, resulting in less blocked micropores and catalysts with higher long-term stability.
Fil: Possato, Luiz Gustavo. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Diniz, Rosiane N.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Garetto, Teresita Francisca. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones En Catalisis y Petroquímica "ing. Jose Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones En Catalisis y Petroquímica "ing. Jose Miguel Parera"; Argentina
Fil: Pulcinelli, Sandra H.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Santilli, Celso V.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Martins, Leandro. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
description The catalytic properties of monomodal microporous and bimodal micro-mesoporous zeolites were investigated in the gas-phase dehydration of glycerol. The desilication methodology used to produce the mesoporous zeolites minimized diffusion limitations and increased glycerol conversion in the catalytic reaction due to the hierarchical system of secondary pores created in the zeolite crystals. The chemical and structural properties of the catalyst were studied by X-ray diffraction, nitrogen adsorption?desorption isotherms, NH3-TPD and pyridine chemisorption followed by IR-spectroscopy. Although the aim was to desilicate to create mesoporosity in the zeolite crystals, the desilication promoted the formation of extra-framework aluminum species that affected the conversion of glycerol and the products distribution. The results clearly show that the mesoporous zeolites with designed mesopore structure allowed a rapid diffusion and consequently improved the reaction kinetics. However, especial attention must be given to the desilication procedure because the severity of the treatment negatively interfered on the Brønsted and Lewis acid sites relative concentration and, consequently, in the efficiency of the catalysis performed by these materials. On the other hand, during the catalytic reaction, the intracrystalline mesopores allowed carbonaceous compounds to be deposited herein, resulting in less blocked micropores and catalysts with higher long-term stability.
publishDate 2013
dc.date.none.fl_str_mv 2013-04
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/11336/21234
Possato, Luiz Gustavo; Diniz, Rosiane N.; Garetto, Teresita Francisca; Pulcinelli, Sandra H.; Santilli, Celso V.; et al.; A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites; Elsevier; Journal of Catalysis; 300; 4-2013; 102-112
0021-9517
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21234
identifier_str_mv Possato, Luiz Gustavo; Diniz, Rosiane N.; Garetto, Teresita Francisca; Pulcinelli, Sandra H.; Santilli, Celso V.; et al.; A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites; Elsevier; Journal of Catalysis; 300; 4-2013; 102-112
0021-9517
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.jcat.2013.01.003
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0021951713000055
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
publisher.none.fl_str_mv Elsevier
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_ 1846082661911625728
score 13.22299

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