Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.9/3052
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dc.contributor.authorLopes, André-
dc.contributor.authorBogel-Lukasik, R.-
dc.date.accessioned2018-09-07T15:39:55Z-
dc.date.available2018-09-07T15:39:55Z-
dc.date.issued2018-
dc.identifier.citationLopes, André da Costa; Lukasik, Rafal M. - Separation and recovery of a hemicellulose-derived sugar produced from the hydrolysis of biomass by an acidic ionic liquid. In: ChemSusChem, 2018, Vol. 11, p. 1099-1107pt_PT
dc.identifier.issn1864-5631-
dc.identifier.urihttp://hdl.handle.net/10400.9/3052-
dc.description.abstractABSTRACT: Biomass processing with ionic liquids (ILs) has been one of the most topical research areas in recent years. However, separation and recovery of biomass products and ILs are currently a challenge. Recovery of produced monosaccharides from an IL postreaction solution and the possibility to reuse the IL are strongly required to guarantee the sustainability of biomass processing. The present study demonstrates a novel approach that aims at separating a biomass hemicellulose-derived product, namely, xylose, and 1-ethyl-3-methylimidazolium hydrogensulfate ([emim][HSO4]). High polarity of a postreaction system composed of xylose, IL, and water is one of the major hindrances in the separation performance. A proposed solution is fine-tuning of the system polarity by the addition of moderately polar acetonitrile. To scrutinize the potential of xylose and IL separation, phase equilibria of a system constituted by [emim][HSO4], water, and acetonitrile were studied. Additionally, preparative chromatography experiments with alumina as a stationary phase were performed to determine the conditions required for efficient separation of the sugar and the IL by selective adsorption of xylose on alumina in detriment of IL. The amount and treatment of the stationary phase, eluent polarity, and amount of loaded sample were also scrutinized in this study. Treatment of alumina was considered as a necessary step to achieve recovery yields of 90.8 and 98.1 wt% for the IL and xylose, respectively, as separate fractions.pt_PT
dc.language.isoengpt_PT
dc.publisherWiley-VCH Verlagpt_PT
dc.relationinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F90282%2F2012/PTpt_PT
dc.relationIF/00471/2015pt_PT
dc.relationROTEIRO/0189/2013pt_PT
dc.relationinfo:eu-repo/grantAgreement/FCT/5876/147218/PTpt_PT
dc.relationPOCI-01-0145-FEDER-007265pt_PT
dc.rightsopenAccesspt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCarbohydratespt_PT
dc.subjectAdsorptionpt_PT
dc.subjectIonic Liquidspt_PT
dc.subjectChromatographypt_PT
dc.subjectMonosaccharidespt_PT
dc.titleSeparation and recovery of a hemicellulose-derived sugar produced from the hydrolysis of biomass by an acidic ionic liquidpt_PT
dc.typearticlept_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
degois.publication.firstPage1099pt_PT
degois.publication.lastPage1107pt_PT
degois.publication.titleChemSusChempt_PT
dc.relation.publisherversionhttps://doi.org/10.1002/cssc.201702231pt_PT
dc.peerreviewedyespt_PT
degois.publication.volume11pt_PT
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