Preparation and properties of aluminosilicate aerogels from boehmite and waterglass

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dc.contributor.authorOcejo, Marta
dc.contributor.authorGoiti, Eunate
dc.contributor.authorSalinas-Garzón, Juan
dc.contributor.authorIbáñez-Gómez, José Antonio
dc.contributor.institutionECOEFICIENCIA DE PRODUCTOS DE CONSTRUCCIÓN
dc.date.accessioned2024-07-24T12:04:03Z
dc.date.available2024-07-24T12:04:03Z
dc.date.issued2024-03-01
dc.descriptionPublisher Copyright: © 2024 Elsevier B.V.
dc.description.abstractAluminosilicate aerogels are promising thermal insulation materials for high temperature applications. In this study, aluminosilicate aerogels were effectively synthesised using affordable precursors: dispersible boehmite powder and waterglass solutions, with subsequent drying achieved by supercritical CO2 processing. According to the evaluation of their properties, the Al–Si aerogels exhibited low densities (0.11 g/cm3), low thermal conductivities (<0.021 W/m·K) and high specific surface areas (SSA) (516 m2/g for an Al:Si molar ratio of 3:1). When waterglass-based aerogel and aluminosilicate samples were treated at high temperature (1200 °C), the formation of mullite was demonstrated for the aluminosilicate aerogel with a molar ratio of Al:Si 3:1, which showed a higher value for SSA compared to the waterglass-based aerogel.en
dc.description.sponsorshipThis research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
dc.description.statusPeer reviewed
dc.identifier.citationOcejo , M , Goiti , E , Salinas-Garzón , J & Ibáñez-Gómez , J A 2024 , ' Preparation and properties of aluminosilicate aerogels from boehmite and waterglass ' , Materials Chemistry and Physics , vol. 315 , 128912 . https://doi.org/10.1016/j.matchemphys.2024.128912
dc.identifier.doi10.1016/j.matchemphys.2024.128912
dc.identifier.issn0254-0584
dc.identifier.urihttps://hdl.handle.net/11556/3412
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85182733641&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofMaterials Chemistry and Physics
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsAerogel
dc.subject.keywordsBoehmite
dc.subject.keywordsThermal properties
dc.subject.keywordsWaterglass
dc.subject.keywordsGeneral Materials Science
dc.subject.keywordsCondensed Matter Physics
dc.titlePreparation and properties of aluminosilicate aerogels from boehmite and waterglassen
dc.typejournal article
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