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Acid-modified clays as green catalysts for the hydrolysis of hemicellulosic oligosaccharides

2015Journal article Open access
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dc.contributor.authorVilcocq, Léa
dc.contributor.authorSpínola, Vítor
dc.contributor.authorMoniz, Patrícia
dc.contributor.authorDuarte, Luís C.
dc.contributor.authorCarvalheiro, Florbela
dc.contributor.authorFernandes, César
dc.contributor.authorCastilho, Paula
dc.date.accessioned2021-03-30T10:47:18Z
dc.date.available2021-03-30T10:47:18Z
dc.date.issued2015
dc.description.abstractThe hydrolysis of hemicellulosic oligosaccharides (OS) was investigated using acid-activated clays (prepared from natural Porto Santo montmorillonite clay) as catalysts. Acid activation was performed in HCl solution or with aluminium exchange. The clay catalysts were characterized by XRD, N2 adsorption isotherms, CEC, FTIR, titration of acid sites in water and adsorption of sugars and disaccharides. They were tested for the hydrolysis of a model compound, maltose, and of OS-rich liquor from rice straw fractionation. The HCl-activated clays were the most efficient catalysts for maltose hydrolysis. It was demonstrated that the hydrolysis of OS into monomer sugars over a clay catalyst is technically feasible and that this reaction leads to the selective removal of glucose, arabinose and acetic acid side groups from the OS structure, thus yielding simpler xylo-oligosaccharide chains. Furthermore, no significant conversion of monomer sugars into furans was observed.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationVilcocq, L., Spinola, V., Moniz, P., Duarte, L. C., Carvalheiro, F., Fernandes, C., & Castilho, P. (2015). Acid-modified clays as green catalysts for the hydrolysis of hemicellulosic oligosaccharides. Catalysis Science & Technology, 5(8), 4072-4080.pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3221
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherRoyal Society of Chemistrypt_PT
dc.relationCLAYCATS4 - Clay catalysts for biomass conversion
dc.relationStrategic Project - UI 674 - 2011-2012
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectAcid-modified clayspt_PT
dc.subjectGreen catalystspt_PT
dc.subjectHydrolysis of hemicellulosic oligosaccharidespt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleAcid-modified clays as green catalysts for the hydrolysis of hemicellulosic oligosaccharidespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCLAYCATS4 - Clay catalysts for biomass conversion
oaire.awardTitleStrategic Project - UI 674 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/COMPETE/PTDC%2FAGR-ALI%2F122261%2F2010/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FCTM-CER%2F121295%2F2010/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FQUI%2FUI0674%2F2011/PT
oaire.citation.endPage4080pt_PT
oaire.citation.issue8pt_PT
oaire.citation.startPage4072pt_PT
oaire.citation.titleCatalysis Science & Technologypt_PT
oaire.citation.volume5pt_PT
oaire.fundingStreamCOMPETE
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameSpínola
person.familyNameFernandes
person.familyNameCastilho
person.givenNameVítor
person.givenNameCesar
person.givenNamePaula C
person.identifierA-4412-2013
person.identifier.ciencia-id6D15-8C69-A2E0
person.identifier.orcid0000-0003-2456-8613
person.identifier.orcid0000-0001-9289-9962
person.identifier.orcid0000-0002-8303-4286
person.identifier.scopus-author-id54881258000
person.identifier.scopus-author-id14064572200
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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