Template-controlled acidity and catalytic activity of ferrierite crystals

A synthesis strategy to tailor the acid sites location in ferrierite crystals has been developed. The zeolite catalysts were synthesised in fluoride medium using different combinations of organic structure directing agents (SDAs) in the absence of inorganic cations. Therefore, the negative charge as...

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Detalles Bibliográficos
Autores: Pinar, Ana Belén, Márquez Álvarez, Carlos, Grande Casas, María Sol, Pérez-Pariente, Joaquín
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/12057
Acceso en línea:http://hdl.handle.net/10261/12057
Access Level:acceso abierto
Palabra clave:Ferrierite
Zeolite synthesis
Fluoride medium
Al sitting
Acid sites distribution
FTIR
Pyridine
Isomerisation
M-Xylene
1-Butene
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repository_id_str
spelling Template-controlled acidity and catalytic activity of ferrierite crystalsPinar, Ana BelénMárquez Álvarez, CarlosGrande Casas, María SolPérez-Pariente, JoaquínFerrieriteZeolite synthesisFluoride mediumAl sittingAcid sites distributionFTIRPyridineIsomerisationM-Xylene1-ButeneA synthesis strategy to tailor the acid sites location in ferrierite crystals has been developed. The zeolite catalysts were synthesised in fluoride medium using different combinations of organic structure directing agents (SDAs) in the absence of inorganic cations. Therefore, the negative charge associated to the incorporation of aluminium to the framework was compensated exclusively by the positive charge of the organic SDAs. In this way, Al sitting in the zeolite framework was driven by the specific location of the different SDA molecules within the zeolite void volume. Following this synthesis strategy, it has been found that the distribution of strongly acidic hydroxyl groups in the proton form of the zeolites obtained after removal of the organic templates was dependent on the combination of organic molecules used as SDAs. Moreover, the catalytic activity of the zeolites in m-xylene and 1-butene isomerisation increased as the relative population of strong Brönsted acid groups in sterically constrained sites inside the ferrierite cavity decreased.This work has been financially supported by the MICINN (project CTQ2006-06282).Peer reviewedElsevier200920092009info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501573203 bytesapplication/pdfhttp://hdl.handle.net/10261/12057reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.jcat.2009.02.017info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/120572026-05-22T06:33:51Z
dc.title.none.fl_str_mv Template-controlled acidity and catalytic activity of ferrierite crystals
title Template-controlled acidity and catalytic activity of ferrierite crystals
spellingShingle Template-controlled acidity and catalytic activity of ferrierite crystals
Pinar, Ana Belén
Ferrierite
Zeolite synthesis
Fluoride medium
Al sitting
Acid sites distribution
FTIR
Pyridine
Isomerisation
M-Xylene
1-Butene
title_short Template-controlled acidity and catalytic activity of ferrierite crystals
title_full Template-controlled acidity and catalytic activity of ferrierite crystals
title_fullStr Template-controlled acidity and catalytic activity of ferrierite crystals
title_full_unstemmed Template-controlled acidity and catalytic activity of ferrierite crystals
title_sort Template-controlled acidity and catalytic activity of ferrierite crystals
dc.creator.none.fl_str_mv Pinar, Ana Belén
Márquez Álvarez, Carlos
Grande Casas, María Sol
Pérez-Pariente, Joaquín
author Pinar, Ana Belén
author_facet Pinar, Ana Belén
Márquez Álvarez, Carlos
Grande Casas, María Sol
Pérez-Pariente, Joaquín
author_role author
author2 Márquez Álvarez, Carlos
Grande Casas, María Sol
Pérez-Pariente, Joaquín
author2_role author
author
author
dc.subject.none.fl_str_mv Ferrierite
Zeolite synthesis
Fluoride medium
Al sitting
Acid sites distribution
FTIR
Pyridine
Isomerisation
M-Xylene
1-Butene
topic Ferrierite
Zeolite synthesis
Fluoride medium
Al sitting
Acid sites distribution
FTIR
Pyridine
Isomerisation
M-Xylene
1-Butene
description A synthesis strategy to tailor the acid sites location in ferrierite crystals has been developed. The zeolite catalysts were synthesised in fluoride medium using different combinations of organic structure directing agents (SDAs) in the absence of inorganic cations. Therefore, the negative charge associated to the incorporation of aluminium to the framework was compensated exclusively by the positive charge of the organic SDAs. In this way, Al sitting in the zeolite framework was driven by the specific location of the different SDA molecules within the zeolite void volume. Following this synthesis strategy, it has been found that the distribution of strongly acidic hydroxyl groups in the proton form of the zeolites obtained after removal of the organic templates was dependent on the combination of organic molecules used as SDAs. Moreover, the catalytic activity of the zeolites in m-xylene and 1-butene isomerisation increased as the relative population of strong Brönsted acid groups in sterically constrained sites inside the ferrierite cavity decreased.
publishDate 2009
dc.date.none.fl_str_mv 2009
2009
2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/12057
url http://hdl.handle.net/10261/12057
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.jcat.2009.02.017
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 573203 bytes
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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