Glycerol dehydration catalyzed by MWW zeolites and the changes inthe catalyst deactivation caused by porosity modification

Autores
Rodrigues, Mariana V.; Vignatti, Charito Ivana; Garetto, Teresita Francisca; Pulcinelli, Sandra H.; Santilli, Celso V.; Martins, Leandro
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Members of the layered MWW family, including microporous MCM-22, pillared MCM-36 and delaminated ITQ-2 zeolites, were used as catalysts for the gas phase dehydration of glycerol. The chemical, structural and surface properties of the catalysts were characterized by X-ray diffraction, N2 adsorption–desorption isotherms, SEM, TEM, NH3-TPD and pyridine chemisorption followed by IR spectroscopy. The results clearly showed that the modified zeolites with designed mesopore structure enabled rapid diffusion and consequently improved the glycerol conversion. Characterization of the acid sites revealed that the relative abundance of Brønsted and Lewis acid sites influenced the efficiency of the catalysis performed by these materials. 13C NMR spectra of the spent catalysts confirmed that differences in the nature and amount of carbonaceous deposits are related to the pore structures of the catalysts, with greater formation of polyaromatic compounds inside zeolite pores, while polyglycols are preferentially formed at the external surfaces of the MCM-36 and ITQ-2 zeolites, as expected for the more exposed sheets.
Fil: Rodrigues, Mariana V.. Instituto de Química de Araraquara (UNESP); Brasil
Fil: Vignatti, Charito Ivana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Garetto, Teresita Francisca. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; 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
Mww Zeolites
Glycerol Dehydration
Deactivation
Pillarization
Delamination
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:11336/36643
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/36643
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Glycerol dehydration catalyzed by MWW zeolites and the changes inthe catalyst deactivation caused by porosity modificationRodrigues, Mariana V.Vignatti, Charito IvanaGaretto, Teresita FranciscaPulcinelli, Sandra H.Santilli, Celso V.Martins, LeandroMww ZeolitesGlycerol DehydrationDeactivationPillarizationDelaminationhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Members of the layered MWW family, including microporous MCM-22, pillared MCM-36 and delaminated ITQ-2 zeolites, were used as catalysts for the gas phase dehydration of glycerol. The chemical, structural and surface properties of the catalysts were characterized by X-ray diffraction, N2 adsorption–desorption isotherms, SEM, TEM, NH3-TPD and pyridine chemisorption followed by IR spectroscopy. The results clearly showed that the modified zeolites with designed mesopore structure enabled rapid diffusion and consequently improved the glycerol conversion. Characterization of the acid sites revealed that the relative abundance of Brønsted and Lewis acid sites influenced the efficiency of the catalysis performed by these materials. 13C NMR spectra of the spent catalysts confirmed that differences in the nature and amount of carbonaceous deposits are related to the pore structures of the catalysts, with greater formation of polyaromatic compounds inside zeolite pores, while polyglycols are preferentially formed at the external surfaces of the MCM-36 and ITQ-2 zeolites, as expected for the more exposed sheets.Fil: Rodrigues, Mariana V.. Instituto de Química de Araraquara (UNESP); BrasilFil: Vignatti, Charito Ivana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Garetto, Teresita Francisca. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; 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; BrasilElsevier2015-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/36643Rodrigues, Mariana V.; Vignatti, Charito Ivana; Garetto, Teresita Francisca; Pulcinelli, Sandra H.; Santilli, Celso V.; et al.; Glycerol dehydration catalyzed by MWW zeolites and the changes inthe catalyst deactivation caused by porosity modification; Elsevier; Applied Catalysis A: General; 495; 4-2015; 84-910926-860XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2015.02.010info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0926860X15000824info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:51:23Zoai:ri.conicet.gov.ar:11336/36643instacron: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 09:51:23.599CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Glycerol dehydration catalyzed by MWW zeolites and the changes inthe catalyst deactivation caused by porosity modification
title Glycerol dehydration catalyzed by MWW zeolites and the changes inthe catalyst deactivation caused by porosity modification
spellingShingle Glycerol dehydration catalyzed by MWW zeolites and the changes inthe catalyst deactivation caused by porosity modification
Rodrigues, Mariana V.
Mww Zeolites
Glycerol Dehydration
Deactivation
Pillarization
Delamination
title_short Glycerol dehydration catalyzed by MWW zeolites and the changes inthe catalyst deactivation caused by porosity modification
title_full Glycerol dehydration catalyzed by MWW zeolites and the changes inthe catalyst deactivation caused by porosity modification
title_fullStr Glycerol dehydration catalyzed by MWW zeolites and the changes inthe catalyst deactivation caused by porosity modification
title_full_unstemmed Glycerol dehydration catalyzed by MWW zeolites and the changes inthe catalyst deactivation caused by porosity modification
title_sort Glycerol dehydration catalyzed by MWW zeolites and the changes inthe catalyst deactivation caused by porosity modification
dc.creator.none.fl_str_mv Rodrigues, Mariana V.
Vignatti, Charito Ivana
Garetto, Teresita Francisca
Pulcinelli, Sandra H.
Santilli, Celso V.
Martins, Leandro
author Rodrigues, Mariana V.
author_facet Rodrigues, Mariana V.
Vignatti, Charito Ivana
Garetto, Teresita Francisca
Pulcinelli, Sandra H.
Santilli, Celso V.
Martins, Leandro
author_role author
author2 Vignatti, Charito Ivana
Garetto, Teresita Francisca
Pulcinelli, Sandra H.
Santilli, Celso V.
Martins, Leandro
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Mww Zeolites
Glycerol Dehydration
Deactivation
Pillarization
Delamination
topic Mww Zeolites
Glycerol Dehydration
Deactivation
Pillarization
Delamination
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Members of the layered MWW family, including microporous MCM-22, pillared MCM-36 and delaminated ITQ-2 zeolites, were used as catalysts for the gas phase dehydration of glycerol. The chemical, structural and surface properties of the catalysts were characterized by X-ray diffraction, N2 adsorption–desorption isotherms, SEM, TEM, NH3-TPD and pyridine chemisorption followed by IR spectroscopy. The results clearly showed that the modified zeolites with designed mesopore structure enabled rapid diffusion and consequently improved the glycerol conversion. Characterization of the acid sites revealed that the relative abundance of Brønsted and Lewis acid sites influenced the efficiency of the catalysis performed by these materials. 13C NMR spectra of the spent catalysts confirmed that differences in the nature and amount of carbonaceous deposits are related to the pore structures of the catalysts, with greater formation of polyaromatic compounds inside zeolite pores, while polyglycols are preferentially formed at the external surfaces of the MCM-36 and ITQ-2 zeolites, as expected for the more exposed sheets.
Fil: Rodrigues, Mariana V.. Instituto de Química de Araraquara (UNESP); Brasil
Fil: Vignatti, Charito Ivana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Garetto, Teresita Francisca. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; 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 Members of the layered MWW family, including microporous MCM-22, pillared MCM-36 and delaminated ITQ-2 zeolites, were used as catalysts for the gas phase dehydration of glycerol. The chemical, structural and surface properties of the catalysts were characterized by X-ray diffraction, N2 adsorption–desorption isotherms, SEM, TEM, NH3-TPD and pyridine chemisorption followed by IR spectroscopy. The results clearly showed that the modified zeolites with designed mesopore structure enabled rapid diffusion and consequently improved the glycerol conversion. Characterization of the acid sites revealed that the relative abundance of Brønsted and Lewis acid sites influenced the efficiency of the catalysis performed by these materials. 13C NMR spectra of the spent catalysts confirmed that differences in the nature and amount of carbonaceous deposits are related to the pore structures of the catalysts, with greater formation of polyaromatic compounds inside zeolite pores, while polyglycols are preferentially formed at the external surfaces of the MCM-36 and ITQ-2 zeolites, as expected for the more exposed sheets.
publishDate 2015
dc.date.none.fl_str_mv 2015-04
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/11336/36643
Rodrigues, Mariana V.; Vignatti, Charito Ivana; Garetto, Teresita Francisca; Pulcinelli, Sandra H.; Santilli, Celso V.; et al.; Glycerol dehydration catalyzed by MWW zeolites and the changes inthe catalyst deactivation caused by porosity modification; Elsevier; Applied Catalysis A: General; 495; 4-2015; 84-91
0926-860X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/36643
identifier_str_mv Rodrigues, Mariana V.; Vignatti, Charito Ivana; Garetto, Teresita Francisca; Pulcinelli, Sandra H.; Santilli, Celso V.; et al.; Glycerol dehydration catalyzed by MWW zeolites and the changes inthe catalyst deactivation caused by porosity modification; Elsevier; Applied Catalysis A: General; 495; 4-2015; 84-91
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.2015.02.010
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0926860X15000824
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
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_ 1844613579622318080
score 13.070432

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