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dc.contributor.authorJiao, Huanfeng
dc.contributor.authorZhao, Xiaoliang
dc.contributor.authorLv, Chunxiao
dc.contributor.authorWang, Yijun
dc.contributor.authorYang, Dongjiang
dc.contributor.authorLi, Zhenhuan
dc.contributor.authorYao, Xiangdong
dc.date.accessioned2017-07-26T00:53:08Z
dc.date.available2017-07-26T00:53:08Z
dc.date.issued2016
dc.identifier.issn2045-2322
dc.identifier.doi10.1038/srep34068
dc.identifier.urihttp://hdl.handle.net/10072/100490
dc.description.abstractOne-dimensional γ-Al2O3 nanofibers were modified with Nb2O5 to be used as an efficient heterogeneous catalyst to catalyze biomass into 5-hydroxymethylfurfural (5-HMF). At low Nb2O5 loading, the niobia species were well dispersed on γ-Al2O3 nanofiber through Nb–O–Al bridge bonds. The interaction between Nb2O5 precursor and γ-Al2O3 nanofiber results in the niobia species with strong Lewis acid sites and intensive Brønsted acid sites, which made 5-HMF yield from glucose to reach the maximum 55.9~59.0% over Nb2O5-γ-Al2O3 nanofiber with a loading of 0.5~1 wt% Nb2O5 at 150 °C for 4 h in dimethyl sulfoxide. However, increasing Nb2O5 loading could lead to the formation of two-dimensional polymerized niobia species, three-dimensional polymerized niobia species and crystallization, which significantly influenced the distribution and quantity of the Lewis acid sites and Brönst acid sites over Nb2O5-γ-Al2O3 nanofiber. Lewis acid site Nbδ+ played a key role on the isomerization of glucose to fructose, while Brønsted acid sites are more active for the dehydration of generated fructose to 5-HMF. In addition, the heterogeneous Nb2O5-γ-Al2O3 nanofiber catalyst with suitable ratio of Lewis acid to Brönsted sites should display an more excellent catalytic performance in the conversion of glucose to 5-HMF.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherNature Macmillan
dc.relation.ispartofpagefrom34068-1
dc.relation.ispartofpageto34068-9
dc.relation.ispartofjournalScientific Reports
dc.relation.ispartofvolume6
dc.subject.fieldofresearchInorganic chemistry not elsewhere classified
dc.subject.fieldofresearchcode340299
dc.titleNb2O5-γ-Al2O3 nanofibers as heterogeneous catalysts for efficient conversion of glucose to 5-hydroxymethylfurfural
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© The Author(s) 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
gro.hasfulltextFull Text
gro.griffith.authorYao, Xiangdong
gro.griffith.authorYang, Dongjiang


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