Gas phase oxidation of furfural to maleic anhydride on V2O5/g-Al2O3 catalysts: Reaction conditions to slow down the deactivation

An alumina-supported vanadium oxide catalyst (13.9 wt.% vanadium oxide) has been characterized by different techniques and tested in the gas phase oxidation of furfural. These studies have shown that the catalyst unavoidably deactivates by deposition of maleates and resins over the surface. Full reg...

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Autores: Alonso Fagúndez, Noelia, Ojeda Pineda, Manuel, Mariscal López, Rafael, García Fierro, José Luis, López Granados, Manuel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2017
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/184709
Acceso en línea:http://hdl.handle.net/10261/184709
Access Level:acceso abierto
Palabra clave:Maleic anhydride
Furfural
Gas phase oxidation
Vanadium oxide
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spelling Gas phase oxidation of furfural to maleic anhydride on V2O5/g-Al2O3 catalysts: Reaction conditions to slow down the deactivationAlonso Fagúndez, NoeliaOjeda Pineda, ManuelMariscal López, RafaelGarcía Fierro, José LuisLópez Granados, ManuelMaleic anhydrideFurfuralGas phase oxidationVanadium oxideAn alumina-supported vanadium oxide catalyst (13.9 wt.% vanadium oxide) has been characterized by different techniques and tested in the gas phase oxidation of furfural. These studies have shown that the catalyst unavoidably deactivates by deposition of maleates and resins over the surface. Full regeneration is accomplished by burning off these deposits at 773 K. The studies have also demonstrated that if the primary contact occurs at temperatures at which furfural conversion is low and then the temperature is increased in a low- to high-temperature mode, intense deposition of maleates and resins takes place and the catalyst is rapidly deactivated. The increase of the temperature does not result in removal of deposits but accelerates the deposition. Under this protocol, the yield of maleic anhydride never exceeded 30%, irrespective of the reaction conditions (temperature and O2/furfural mole ratio). In contrast, if the catalyst first contacts the reaction mixture at high oxidizing potential, then the rate of maleate and resin deposition is much slower, and so is the deactivation rate, and the catalyst can display a higher yield of maleic anhydride for a longer period of time. A high oxidizing potential can be attained at a high reaction temperature (close to full conversion). A higher oxidizing potential at a given high temperature can be accomplished by increasing the O2/furfural mole ratio. Thus, for example, first contacting the catalyst at 593 K (full conversion), 1 vol.% of furfural, and O2/furfural mole ratio = 10, obtained an initial maleic anhydride yield of 68%, and the yield was still greater than 50% after 15 h on stream. On contacting at 573 K with 1 vol.% furfural and 20 vol.% O2, the maleic anhydride yield was initially close to 75% and was above 60% after 15 h.Financial support from the Spanish Ministry of Economy and Competitiveness is gratefully acknowledged Project (CTQ2015-64226-C3-1-R).Peer ReviewedAcademic PressMinisterio de Economía y Competitividad (España)Mariscal Lopez, Rafael [0000-0002-1891-1748]Garcia Fierro, Jose Luis [0000-0001-8465-2441]Lopez Granados, Manuel [0000-0002-1269-0622]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2019201920172019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/184709reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2015-64226-C3-1-Rhttps://doi.org/10.1016/j.jcat.2016.12.005Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1847092026-05-22T06:33:51Z
dc.title.none.fl_str_mv Gas phase oxidation of furfural to maleic anhydride on V2O5/g-Al2O3 catalysts: Reaction conditions to slow down the deactivation
title Gas phase oxidation of furfural to maleic anhydride on V2O5/g-Al2O3 catalysts: Reaction conditions to slow down the deactivation
spellingShingle Gas phase oxidation of furfural to maleic anhydride on V2O5/g-Al2O3 catalysts: Reaction conditions to slow down the deactivation
Alonso Fagúndez, Noelia
Maleic anhydride
Furfural
Gas phase oxidation
Vanadium oxide
title_short Gas phase oxidation of furfural to maleic anhydride on V2O5/g-Al2O3 catalysts: Reaction conditions to slow down the deactivation
title_full Gas phase oxidation of furfural to maleic anhydride on V2O5/g-Al2O3 catalysts: Reaction conditions to slow down the deactivation
title_fullStr Gas phase oxidation of furfural to maleic anhydride on V2O5/g-Al2O3 catalysts: Reaction conditions to slow down the deactivation
title_full_unstemmed Gas phase oxidation of furfural to maleic anhydride on V2O5/g-Al2O3 catalysts: Reaction conditions to slow down the deactivation
title_sort Gas phase oxidation of furfural to maleic anhydride on V2O5/g-Al2O3 catalysts: Reaction conditions to slow down the deactivation
dc.creator.none.fl_str_mv Alonso Fagúndez, Noelia
Ojeda Pineda, Manuel
Mariscal López, Rafael
García Fierro, José Luis
López Granados, Manuel
author Alonso Fagúndez, Noelia
author_facet Alonso Fagúndez, Noelia
Ojeda Pineda, Manuel
Mariscal López, Rafael
García Fierro, José Luis
López Granados, Manuel
author_role author
author2 Ojeda Pineda, Manuel
Mariscal López, Rafael
García Fierro, José Luis
López Granados, Manuel
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Mariscal Lopez, Rafael [0000-0002-1891-1748]
Garcia Fierro, Jose Luis [0000-0001-8465-2441]
Lopez Granados, Manuel [0000-0002-1269-0622]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Maleic anhydride
Furfural
Gas phase oxidation
Vanadium oxide
topic Maleic anhydride
Furfural
Gas phase oxidation
Vanadium oxide
description An alumina-supported vanadium oxide catalyst (13.9 wt.% vanadium oxide) has been characterized by different techniques and tested in the gas phase oxidation of furfural. These studies have shown that the catalyst unavoidably deactivates by deposition of maleates and resins over the surface. Full regeneration is accomplished by burning off these deposits at 773 K. The studies have also demonstrated that if the primary contact occurs at temperatures at which furfural conversion is low and then the temperature is increased in a low- to high-temperature mode, intense deposition of maleates and resins takes place and the catalyst is rapidly deactivated. The increase of the temperature does not result in removal of deposits but accelerates the deposition. Under this protocol, the yield of maleic anhydride never exceeded 30%, irrespective of the reaction conditions (temperature and O2/furfural mole ratio). In contrast, if the catalyst first contacts the reaction mixture at high oxidizing potential, then the rate of maleate and resin deposition is much slower, and so is the deactivation rate, and the catalyst can display a higher yield of maleic anhydride for a longer period of time. A high oxidizing potential can be attained at a high reaction temperature (close to full conversion). A higher oxidizing potential at a given high temperature can be accomplished by increasing the O2/furfural mole ratio. Thus, for example, first contacting the catalyst at 593 K (full conversion), 1 vol.% of furfural, and O2/furfural mole ratio = 10, obtained an initial maleic anhydride yield of 68%, and the yield was still greater than 50% after 15 h on stream. On contacting at 573 K with 1 vol.% furfural and 20 vol.% O2, the maleic anhydride yield was initially close to 75% and was above 60% after 15 h.
publishDate 2017
dc.date.none.fl_str_mv 2017
2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/184709
url http://hdl.handle.net/10261/184709
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2015-64226-C3-1-R
https://doi.org/10.1016/j.jcat.2016.12.005
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Academic Press
publisher.none.fl_str_mv Academic Press
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
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