Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/19626
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dc.contributor.authorNeves, Patriciapt
dc.contributor.authorRusso, Patricia A.pt
dc.contributor.authorFernandes, Augustept
dc.contributor.authorAntunes, Margarida M.pt
dc.contributor.authorFarinha, Joaopt
dc.contributor.authorPillinger, Martynpt
dc.contributor.authorRibeiro, Maria Filipapt
dc.contributor.authorCastanheiro, Jose E.pt
dc.contributor.authorValente, Anabela A.pt
dc.date.accessioned2017-12-07T19:19:15Z-
dc.date.issued2014pt
dc.identifier.issn0926-860Xpt
dc.identifier.urihttp://hdl.handle.net/10773/19626-
dc.description.abstractMesostructured zirconium-based mixed oxides (MZM) are versatile solid acid catalysts for the chemical valorisation of biomass, within sugar and fatty acid platforms of biorefineries. MZM catalysts containing tungsten and/or aluminium were prepared via a templating route that allows the texture and acid properties to be improved. Their catalytic potential was explored for synthesising different types of interesting oxygenated fuel bio-additives, specifically levulinate esters, furfuryl alkyl ethers and glycerol acetals of the type 1,3-dioxolane and 1,3-dioxane. Levulinate esters are synthesised from furfuryl alcohol (FA), which is produced industrially from lignocelluloses; the acetals are obtained from glycerol, which is a coproduct of the industrial production of biodiesel. The performances of the MZM catalysts have been compared with those of zirconium-(tungsten and/or aluminium) mixed oxides synthesised via conventional co-precipitation (without a template). Structure-activity relationships were established which reveal advantages of the templating route used for the synthesis of the MZM catalysts. The MZM catalysts were more active and led to higher total yields of bio-additives (e.g. up to 86% yield at 100% FA conversion, 140 degrees C, 30 min reaction) than the catalysts prepared by co-precipitation (e.g. up to 45% yield at 88% FA conversion), under similar reaction conditions. Detailed catalytic and characterisation studies were carried out for the used catalysts. (C) 2014 Elsevier B.V. All rights reserved.pt
dc.language.isoengpt
dc.publisherELSEVIER SCIENCE BVpt
dc.relationinfo:eu-repo/grantAgreement/FCT/COMPETE/132936/PTpt
dc.relationinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/114579/PTpt
dc.relationinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F73540%2F2010/PTpt
dc.relationinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F79910%2F2011/PTpt
dc.relationinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F89068%2F2012/PTpt
dc.rightsrestrictedAccesspor
dc.subjectETHYL LEVULINATEpt
dc.subjectHETEROGENEOUS CATALYSISpt
dc.subjectLIGNOCELLULOSIC BIOMASSpt
dc.subjectFUEL ADDITIVESpt
dc.subjectCONVERSIONpt
dc.subjectTUNGSTENpt
dc.subjectDEHYDRATIONpt
dc.subjectACETALIZATIONpt
dc.subjectHYDROGENATIONpt
dc.subjectISOMERIZATIONpt
dc.titleMesoporous zirconia-based mixed oxides as versatile acid catalysts for producing bio-additives from furfuryl alcohol and glycerolpt
dc.typearticlept
dc.peerreviewedyespt
ua.distributioninternationalpt
degois.publication.firstPage148pt
degois.publication.lastPage157pt
degois.publication.titleAPPLIED CATALYSIS A-GENERALpt
degois.publication.volume487pt
dc.date.embargo10000-01-01-
dc.relation.publisherversion10.1016/j.apcata.2014.08.042pt
dc.identifier.doi10.1016/j.apcata.2014.08.042pt
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