Influence of Lewis acidity and CaCl2 on the direct transformation of glucose to 5-hydroxymethylfurfural

[EN] Nb-Zr oxides were evaluated for glucose dehydration to 5-hydroxymethylfurfural. A linear relationship was found between the amount of acid sites and niobium content. Pure Nb2O5 showed the highest acid concentration and surface area and both Brönsted and Lewis acid sites, whereas Zr-containing c...

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Autores: Torres Olea, Benjamín, García Sancho, Cristina, Cecilia, Juan Antonio, Oregui Bengoechea, Mikel, Arias Ergueta, Pedro Luis, Moreno Tost, Ramón, Maireles Torres, Pedro Jesús
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/65153
Acceso en línea:http://hdl.handle.net/10810/65153
Access Level:acceso abierto
Palabra clave:5-hydroxymethylfurfural
glucose dehydration
calcium chloride
Lewis acid sites
solid acid catalysts
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spelling Influence of Lewis acidity and CaCl2 on the direct transformation of glucose to 5-hydroxymethylfurfuralTorres Olea, BenjamínGarcía Sancho, CristinaCecilia, Juan AntonioOregui Bengoechea, MikelArias Ergueta, Pedro LuisMoreno Tost, RamónMaireles Torres, Pedro Jesús5-hydroxymethylfurfuralglucose dehydrationcalcium chlorideLewis acid sitessolid acid catalysts[EN] Nb-Zr oxides were evaluated for glucose dehydration to 5-hydroxymethylfurfural. A linear relationship was found between the amount of acid sites and niobium content. Pure Nb2O5 showed the highest acid concentration and surface area and both Brönsted and Lewis acid sites, whereas Zr-containing catalysts mostly showed Lewis acid sites. Thus, a correlation between the amount of acid sites and catalytic performance was demonstrated, in the absence of metal salt, being Nb2O5 the most active catalyst. However, the catalytic results obtained by the combination of CaCl2 and Zr-containing catalysts, which only showed Lewis acid sites, suggested the direct formation of HMF, without fructose formation, unlike that observed for Nb2O5, which possesses both Brönsted and Lewis acid sites. A HMF yield of 44% was attained by using Nb3Zr7 as acid catalyst and CaCl2 after 90 min at 175 ºC. These catalysts can be reused at least 3 catalytic runs without any pretreatment.The authors are grateful to financial support from the Spanish Ministry of Science, Innovation and Universities (RTI2018‐94918‐B‐C43 and C44 projects), FEDER (European Union) funds (UMA18-FEDERJA-171) and Malaga University.Elsevier202420242021info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/65153reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MICIN/RTI2018-94918-B-C43/info:eu-repo/grantAgreement/MICIN/RTI2018-94918-B-C44/https://www.sciencedirect.com/science/article/pii/S2468823121003023info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/© 2021 Elsevier under CC BY-NC-ND licenseoai:addi.ehu.eus:10810/651532026-06-18T09:23:17Z
dc.title.none.fl_str_mv Influence of Lewis acidity and CaCl2 on the direct transformation of glucose to 5-hydroxymethylfurfural
title Influence of Lewis acidity and CaCl2 on the direct transformation of glucose to 5-hydroxymethylfurfural
spellingShingle Influence of Lewis acidity and CaCl2 on the direct transformation of glucose to 5-hydroxymethylfurfural
Torres Olea, Benjamín
5-hydroxymethylfurfural
glucose dehydration
calcium chloride
Lewis acid sites
solid acid catalysts
title_short Influence of Lewis acidity and CaCl2 on the direct transformation of glucose to 5-hydroxymethylfurfural
title_full Influence of Lewis acidity and CaCl2 on the direct transformation of glucose to 5-hydroxymethylfurfural
title_fullStr Influence of Lewis acidity and CaCl2 on the direct transformation of glucose to 5-hydroxymethylfurfural
title_full_unstemmed Influence of Lewis acidity and CaCl2 on the direct transformation of glucose to 5-hydroxymethylfurfural
title_sort Influence of Lewis acidity and CaCl2 on the direct transformation of glucose to 5-hydroxymethylfurfural
dc.creator.none.fl_str_mv Torres Olea, Benjamín
García Sancho, Cristina
Cecilia, Juan Antonio
Oregui Bengoechea, Mikel
Arias Ergueta, Pedro Luis
Moreno Tost, Ramón
Maireles Torres, Pedro Jesús
author Torres Olea, Benjamín
author_facet Torres Olea, Benjamín
García Sancho, Cristina
Cecilia, Juan Antonio
Oregui Bengoechea, Mikel
Arias Ergueta, Pedro Luis
Moreno Tost, Ramón
Maireles Torres, Pedro Jesús
author_role author
author2 García Sancho, Cristina
Cecilia, Juan Antonio
Oregui Bengoechea, Mikel
Arias Ergueta, Pedro Luis
Moreno Tost, Ramón
Maireles Torres, Pedro Jesús
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv 5-hydroxymethylfurfural
glucose dehydration
calcium chloride
Lewis acid sites
solid acid catalysts
topic 5-hydroxymethylfurfural
glucose dehydration
calcium chloride
Lewis acid sites
solid acid catalysts
description [EN] Nb-Zr oxides were evaluated for glucose dehydration to 5-hydroxymethylfurfural. A linear relationship was found between the amount of acid sites and niobium content. Pure Nb2O5 showed the highest acid concentration and surface area and both Brönsted and Lewis acid sites, whereas Zr-containing catalysts mostly showed Lewis acid sites. Thus, a correlation between the amount of acid sites and catalytic performance was demonstrated, in the absence of metal salt, being Nb2O5 the most active catalyst. However, the catalytic results obtained by the combination of CaCl2 and Zr-containing catalysts, which only showed Lewis acid sites, suggested the direct formation of HMF, without fructose formation, unlike that observed for Nb2O5, which possesses both Brönsted and Lewis acid sites. A HMF yield of 44% was attained by using Nb3Zr7 as acid catalyst and CaCl2 after 90 min at 175 ºC. These catalysts can be reused at least 3 catalytic runs without any pretreatment.
publishDate 2021
dc.date.none.fl_str_mv 2021
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/65153
url http://hdl.handle.net/10810/65153
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICIN/RTI2018-94918-B-C43/
info:eu-repo/grantAgreement/MICIN/RTI2018-94918-B-C44/
https://www.sciencedirect.com/science/article/pii/S2468823121003023
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2021 Elsevier under CC BY-NC-ND license
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2021 Elsevier under CC BY-NC-ND license
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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