Zirconium doped MCM-41 supported WO3 solid acid catalysts for the esterification of oleic acid with methanol

[EN]A series of zirconium doped MCM-41 silica supported WOx solid acid catalysts, with WO3 loading ranging from 5 to 25 wt%, has been prepared by impregnation with ammonium metatungstate, and subsequent activation at temperatures between 450 and 800 °C. XRD, Raman and UV–vis spectroscopies have allo...

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Authors: Jiménez Morales, Ignacio, Santamaría-González, J., Maireles-Torres, P., Jiménez-López, A., Santamariía González
Format: article
Status:Draft version
Publication Date:2010
Country:España
Institution:Universidad de Salamanca (USAL)
Repository:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/163049
Online Access:http://hdl.handle.net/10366/163049
Access Level:Open access
Keyword:Esterification
Oleic acid
Tungstated zirconia
Mesoporous solids
2210.28 Química del Estado Sólido
2303 Química Inorgánica
2391 Química Ambiental
id ES_81d42ab788ad0dfec0334d71cd2feecb
oai_identifier_str oai:gredos.usal.es:10366/163049
network_acronym_str ES
network_name_str España
repository_id_str
spelling Zirconium doped MCM-41 supported WO3 solid acid catalysts for the esterification of oleic acid with methanolJiménez Morales, IgnacioSantamaría-González, J.Maireles-Torres, P.Jiménez-López, A.Santamariía GonzálezEsterificationOleic acidTungstated zirconiaMesoporous solids2210.28 Química del Estado Sólido2303 Química Inorgánica2391 Química Ambiental[EN]A series of zirconium doped MCM-41 silica supported WOx solid acid catalysts, with WO3 loading ranging from 5 to 25 wt%, has been prepared by impregnation with ammonium metatungstate, and subsequent activation at temperatures between 450 and 800 °C. XRD, Raman and UV–vis spectroscopies have allowed us to establish that at temperatures higher than 700 °C occurs the formation of (WO)x/ZrO2 nanoparticles on the surface of MCM-41 support, which exhibit acidic properties and are active in the esterification of oleic acid with methanol at 65 °C. WO3 loadings of 15–20 wt%, after activation at 700 °C, lead to the most active catalysts, with conversion values close to 100%. The catalyst with 15 wt% WO3 is stable even when the reaction is carried out at 200 °C, reusable at least during four cycles and no leaching of tungsten species in the liquid phase was found.Ministerio de Ciencia e Innovación y Junta de AndalucíaElsevier202520252010info:eu-repo/semantics/articleinfo:eu-repo/semantics/drafthttp://hdl.handle.net/10366/163049reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésENE2009-12743-C04-03P06-FQM-01661P09-FQM-5070Attribution-NonCommercial-NoDerivatives 4.0 InternacionalAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1630492026-06-07T06:28:51Z
dc.title.none.fl_str_mv Zirconium doped MCM-41 supported WO3 solid acid catalysts for the esterification of oleic acid with methanol
title Zirconium doped MCM-41 supported WO3 solid acid catalysts for the esterification of oleic acid with methanol
spellingShingle Zirconium doped MCM-41 supported WO3 solid acid catalysts for the esterification of oleic acid with methanol
Jiménez Morales, Ignacio
Esterification
Oleic acid
Tungstated zirconia
Mesoporous solids
2210.28 Química del Estado Sólido
2303 Química Inorgánica
2391 Química Ambiental
title_short Zirconium doped MCM-41 supported WO3 solid acid catalysts for the esterification of oleic acid with methanol
title_full Zirconium doped MCM-41 supported WO3 solid acid catalysts for the esterification of oleic acid with methanol
title_fullStr Zirconium doped MCM-41 supported WO3 solid acid catalysts for the esterification of oleic acid with methanol
title_full_unstemmed Zirconium doped MCM-41 supported WO3 solid acid catalysts for the esterification of oleic acid with methanol
title_sort Zirconium doped MCM-41 supported WO3 solid acid catalysts for the esterification of oleic acid with methanol
dc.creator.none.fl_str_mv Jiménez Morales, Ignacio
Santamaría-González, J.
Maireles-Torres, P.
Jiménez-López, A.
Santamariía González
author Jiménez Morales, Ignacio
author_facet Jiménez Morales, Ignacio
Santamaría-González, J.
Maireles-Torres, P.
Jiménez-López, A.
Santamariía González
author_role author
author2 Santamaría-González, J.
Maireles-Torres, P.
Jiménez-López, A.
Santamariía González
author2_role author
author
author
author
dc.subject.none.fl_str_mv Esterification
Oleic acid
Tungstated zirconia
Mesoporous solids
2210.28 Química del Estado Sólido
2303 Química Inorgánica
2391 Química Ambiental
topic Esterification
Oleic acid
Tungstated zirconia
Mesoporous solids
2210.28 Química del Estado Sólido
2303 Química Inorgánica
2391 Química Ambiental
description [EN]A series of zirconium doped MCM-41 silica supported WOx solid acid catalysts, with WO3 loading ranging from 5 to 25 wt%, has been prepared by impregnation with ammonium metatungstate, and subsequent activation at temperatures between 450 and 800 °C. XRD, Raman and UV–vis spectroscopies have allowed us to establish that at temperatures higher than 700 °C occurs the formation of (WO)x/ZrO2 nanoparticles on the surface of MCM-41 support, which exhibit acidic properties and are active in the esterification of oleic acid with methanol at 65 °C. WO3 loadings of 15–20 wt%, after activation at 700 °C, lead to the most active catalysts, with conversion values close to 100%. The catalyst with 15 wt% WO3 is stable even when the reaction is carried out at 200 °C, reusable at least during four cycles and no leaching of tungsten species in the liquid phase was found.
publishDate 2010
dc.date.none.fl_str_mv 2010
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/draft
format article
status_str draft
dc.identifier.none.fl_str_mv http://hdl.handle.net/10366/163049
url http://hdl.handle.net/10366/163049
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv ENE2009-12743-C04-03
P06-FQM-01661
P09-FQM-5070
dc.rights.none.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname:Universidad de Salamanca (USAL)
instname_str Universidad de Salamanca (USAL)
reponame_str GREDOS. Repositorio Institucional de la Universidad de Salamanca
collection GREDOS. Repositorio Institucional de la Universidad de Salamanca
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869412002382741504
score 15,811543

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