Tungsten-titanium mixed oxide bronzes: Synthesis, characterization and catalytic behavior in methanol transformation

[EN] Tungsten oxide bronze-based materials show extremely adaptive structural and compositional features that make them suitable for functional properties modulation. Herein we report the preparation of a series of Ti-containing tungsten oxide catalysts presenting a hexagonal tungsten bronze-type st...

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Autores: Delgado-Muñoz, Daniel, Solsona Espriu, Benjamín Eduardo, Zamora Blanco, Segundo, Agouram, Said, Soriano Rodríguez, Mª Dolores|||0000-0002-1799-895X, Concepción Heydorn, Patricia|||0000-0003-2058-3103, López Nieto, José Manuel|||0000-0002-6960-3219
Formato: artículo
Fecha de publicación:2019
País:España
Recursos:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/153688
Acesso em linha:https://riunet.upv.es/handle/10251/153688
Access Level:acceso abierto
Palavra-chave:Methanol
Dimethyl ether
Formaldehyde
Tungsten
Titanium
Oxide
Bronze
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oai_identifier_str oai:riunet.upv.es:10251/153688
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Tungsten-titanium mixed oxide bronzes: Synthesis, characterization and catalytic behavior in methanol transformation
title Tungsten-titanium mixed oxide bronzes: Synthesis, characterization and catalytic behavior in methanol transformation
spellingShingle Tungsten-titanium mixed oxide bronzes: Synthesis, characterization and catalytic behavior in methanol transformation
Delgado-Muñoz, Daniel
Methanol
Dimethyl ether
Formaldehyde
Tungsten
Titanium
Oxide
Bronze
title_short Tungsten-titanium mixed oxide bronzes: Synthesis, characterization and catalytic behavior in methanol transformation
title_full Tungsten-titanium mixed oxide bronzes: Synthesis, characterization and catalytic behavior in methanol transformation
title_fullStr Tungsten-titanium mixed oxide bronzes: Synthesis, characterization and catalytic behavior in methanol transformation
title_full_unstemmed Tungsten-titanium mixed oxide bronzes: Synthesis, characterization and catalytic behavior in methanol transformation
title_sort Tungsten-titanium mixed oxide bronzes: Synthesis, characterization and catalytic behavior in methanol transformation
dc.creator.none.fl_str_mv Delgado-Muñoz, Daniel
Solsona Espriu, Benjamín Eduardo
Zamora Blanco, Segundo
Agouram, Said
Soriano Rodríguez, Mª Dolores|||0000-0002-1799-895X
Concepción Heydorn, Patricia|||0000-0003-2058-3103
López Nieto, José Manuel|||0000-0002-6960-3219
author Delgado-Muñoz, Daniel
author_facet Delgado-Muñoz, Daniel
Solsona Espriu, Benjamín Eduardo
Zamora Blanco, Segundo
Agouram, Said
Soriano Rodríguez, Mª Dolores|||0000-0002-1799-895X
Concepción Heydorn, Patricia|||0000-0003-2058-3103
López Nieto, José Manuel|||0000-0002-6960-3219
author_role author
author2 Solsona Espriu, Benjamín Eduardo
Zamora Blanco, Segundo
Agouram, Said
Soriano Rodríguez, Mª Dolores|||0000-0002-1799-895X
Concepción Heydorn, Patricia|||0000-0003-2058-3103
López Nieto, José Manuel|||0000-0002-6960-3219
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Instituto Universitario Mixto de Tecnología Química
Ministerio de Economía y Competitividad
Agencia Estatal de Investigación
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Methanol
Dimethyl ether
Formaldehyde
Tungsten
Titanium
Oxide
Bronze
topic Methanol
Dimethyl ether
Formaldehyde
Tungsten
Titanium
Oxide
Bronze
description [EN] Tungsten oxide bronze-based materials show extremely adaptive structural and compositional features that make them suitable for functional properties modulation. Herein we report the preparation of a series of Ti-containing tungsten oxide catalysts presenting a hexagonal tungsten bronze-type structure. The insertion of Ti4+ within the structure (likely in the octahedral framework of the hexagonal tungsten bronze) leads to an increase in the number of strong acid sites, and the disappearance of W5+ surface species found in the undoped tungsten oxide. With the aim of studying the acid-redox properties of the titled catalysts, the catalytic transformation of methanol has been carried out in the presence and the absence of O-2 in the feed. Both catalytic activity and the acid-redox properties of these catalysts are highly dependent on catalyst composition and reaction conditions applied (i.e. in the presence or in the absence O-2 in the feed). Aerobic experiments show the depletion of the redox functionality (i.e. no formaldehyde detected in the products) when Ti4+ is incorporated in the framework (i.e. 100% selectivity to dimethyl ether). On the other hand, all the catalysts show the loss of the redox function and a decrease in the catalytic activity when anaerobic conditions are used. In the absence of oxygen, the catalysts are still active in the dehydration of methanol to dimethyl ether, i.e. they maintain their acid functionality even when oxygen is not present in the feed. The results are discussed in terms of the available surface active sites present in each case.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-07-25
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/153688
url https://riunet.upv.es/handle/10251/153688
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 SVP-2014-068669 SVP-2014-068669
Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 MAT2017-84118-C2-1-R VALORIZACION DE RECURSOS NATURALES COMO NUEVOS MATERIALES AVANZADOS :APLICACIONES CATALITICAS Y ELECTROQUIMICAS
Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 CTQ2015-68951-C3-1-R TRATAMIENTOS CATALITICOS AVANZADOS PARA LA VALORIZACION DE LA BIOMASA Y LA ELIMINACION DE RESIDUOS ASOCIADOS
Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 RTI2018-099668-B-C21 VALORIZACION DE CO2: CAPTURA, Y TRANSFORMACION CATALITICA PARA ALMACENAMIENTO DE ENERGIA, COMBUSTIBLES Y PRODUCTOS QUIMICOS
Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 SEV-2016-0683
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
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:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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spelling Tungsten-titanium mixed oxide bronzes: Synthesis, characterization and catalytic behavior in methanol transformationDelgado-Muñoz, DanielSolsona Espriu, Benjamín EduardoZamora Blanco, SegundoAgouram, SaidSoriano Rodríguez, Mª Dolores|||0000-0002-1799-895XConcepción Heydorn, Patricia|||0000-0003-2058-3103López Nieto, José Manuel|||0000-0002-6960-3219MethanolDimethyl etherFormaldehydeTungstenTitaniumOxideBronze[EN] Tungsten oxide bronze-based materials show extremely adaptive structural and compositional features that make them suitable for functional properties modulation. Herein we report the preparation of a series of Ti-containing tungsten oxide catalysts presenting a hexagonal tungsten bronze-type structure. The insertion of Ti4+ within the structure (likely in the octahedral framework of the hexagonal tungsten bronze) leads to an increase in the number of strong acid sites, and the disappearance of W5+ surface species found in the undoped tungsten oxide. With the aim of studying the acid-redox properties of the titled catalysts, the catalytic transformation of methanol has been carried out in the presence and the absence of O-2 in the feed. Both catalytic activity and the acid-redox properties of these catalysts are highly dependent on catalyst composition and reaction conditions applied (i.e. in the presence or in the absence O-2 in the feed). Aerobic experiments show the depletion of the redox functionality (i.e. no formaldehyde detected in the products) when Ti4+ is incorporated in the framework (i.e. 100% selectivity to dimethyl ether). On the other hand, all the catalysts show the loss of the redox function and a decrease in the catalytic activity when anaerobic conditions are used. In the absence of oxygen, the catalysts are still active in the dehydration of methanol to dimethyl ether, i.e. they maintain their acid functionality even when oxygen is not present in the feed. The results are discussed in terms of the available surface active sites present in each case.Authors would like to thank DGICYT in Spain for RTI2018-099668-B-C21, CTQ2015-68951-C3-1-R and MAT2017-84118-C2-1-R projects. Authors from ITQ also thank Project SEV-2016-0683 for supporting this research. D.D. thanks MINECO and Severo Ochoa Excellence Program for his fellowship (SVP-2014-068669). Finally, authors thank the Electron Microscopy Service of SCSIE of Universitat de Valencia for their support.ElsevierInstituto Universitario Mixto de Tecnología QuímicaMinisterio de Economía y CompetitividadAgencia Estatal de InvestigaciónRepositorio Institucional de la Universitat Politècnica de València Riunet20192019-07-25journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/153688reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 SVP-2014-068669 SVP-2014-068669Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 MAT2017-84118-C2-1-R VALORIZACION DE RECURSOS NATURALES COMO NUEVOS MATERIALES AVANZADOS :APLICACIONES CATALITICAS Y ELECTROQUIMICASMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 CTQ2015-68951-C3-1-R TRATAMIENTOS CATALITICOS AVANZADOS PARA LA VALORIZACION DE LA BIOMASA Y LA ELIMINACION DE RESIDUOS ASOCIADOSAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 RTI2018-099668-B-C21 VALORIZACION DE CO2: CAPTURA, Y TRANSFORMACION CATALITICA PARA ALMACENAMIENTO DE ENERGIA, COMBUSTIBLES Y PRODUCTOS QUIMICOSMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 SEV-2016-0683open accesshttp://purl.org/coar/access_right/c_abf2Reserva de todos los derechoshttp://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1536882026-06-13T07:49:27Z
score 15,300719

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