Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/20148
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dc.contributor.authorRusso, Patricia A.pt
dc.contributor.authorAntunes, Margarida M.pt
dc.contributor.authorNeves, Patriciapt
dc.contributor.authorWiper, Paul V.pt
dc.contributor.authorFazio, Enzapt
dc.contributor.authorNeri, Fortunatopt
dc.contributor.authorBarreca, Francescopt
dc.contributor.authorMafra, Luispt
dc.contributor.authorPillinger, Martynpt
dc.contributor.authorPinna, Nicolapt
dc.contributor.authorValente, Anabela A.pt
dc.date.accessioned2017-12-07T19:37:08Z-
dc.date.issued2014pt
dc.identifier.issn1463-9262pt
dc.identifier.urihttp://hdl.handle.net/10773/20148-
dc.description.abstractUseful bio-products are obtainable via the catalytic conversion of biomass or derived intermediates as renewable carbon sources. In particular, furanic ethers and levulinate esters (denoted bioEs) have wide application profiles and can be synthesised via acid-catalysed reactions of intermediates such as fructose, 5-hydroxymethyl-2-furaldehyde (HMF) and furfuryl alcohol (FA) with ethanol. Solid acid catalysts are preferred for producing the bioEs with environmental benefits. Furthermore, the versatility of the catalyst in obtaining the bioEs from different intermediates is attractive for process economics, and in the case of porous catalysts, large pore sizes can be beneficial for operating in the kinetic regime. Carbon-based materials are attractive acid catalysts due to their modifiable surface, e.g. with relatively strong sulfonic acid groups (SO3H). Considering these aspects, here, we report the preparation of mesoporous (SO3H)-functionalised-carbon/silica (C/S) composites with large pores and high amounts of acid sites (up to 2.3 mmol g(-1)), and their application as versatile solid acid catalysts for producing bioEs from fructose, HMF and FA. The mesoporous composites were prepared by activation of an organic compound deposited on the ordered mesoporous silicas MCF (mesostructured cellular foam) and SBA-15, where the organic compound (p-toluenesulfonic acid) acted simultaneously as the carbon and SO3H source. The atomic-level characterisation of the acid nature and strengths was performed by P-31 solid-state NMR studies of an adsorbed base probe, in combination with FT-IR and XPS. Comparative catalytic studies showed that the C/S composites are interesting catalysts for obtaining bioEs in high yields, in comparison with classical solid acid catalysts such as sulfonic acid resin Amberlyst (TM)-15 and nanocrystalline (large pore) zeolite H-beta.pt
dc.language.isoengpt
dc.publisherROYAL SOC CHEMISTRYpt
dc.relationinfo:eu-repo/grantAgreement/FCT/COMPETE/132936/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.relationinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F73540%2F2010/PTpt
dc.rightsrestrictedAccesspor
dc.subjectBEARING SULFONIC-ACIDpt
dc.subjectETHYL LEVULINATEpt
dc.subjectAMORPHOUS-CARBONpt
dc.subjectFURFURYL ALCOHOLpt
dc.subjectLIQUID FUELSpt
dc.subjectCONVERSIONpt
dc.subjectBIOMASSpt
dc.subjectFRUCTOSEpt
dc.subjectBIODIESELpt
dc.subjectCHEMICALSpt
dc.titleMesoporous carbon-silica solid acid catalysts for producing useful bio-products within the sugar-platform of biorefineriespt
dc.typearticlept
dc.peerreviewedyespt
ua.distributioninternationalpt
degois.publication.firstPage4292pt
degois.publication.issue9pt
degois.publication.lastPage4305pt
degois.publication.titleGREEN CHEMISTRYpt
degois.publication.volume16pt
dc.date.embargo10000-01-01-
dc.relation.publisherversion10.1039/c4gc01037jpt
dc.identifier.doi10.1039/c4gc01037jpt
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