Preparation and properties of aluminosilicate aerogels from boehmite and waterglass

Preparation and properties of aluminosilicate aerogels from boehmite and waterglass

Aluminosilicate 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 supercriti...

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Veröffentlicht in:Materials chemistry and physics 2024-03, Vol.315, p.128912, Article 128912
Hauptverfasser: Ocejo, Marta, Goiti, Eunate, Salinas-Garzón, Juan, Ibáñez-Gómez, José Antonio
Format: Artikel
Sprache:eng
Schlagworte:
Aerogel
Boehmite
Thermal properties
Waterglass
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Zusammenfassung:Aluminosilicate 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 (
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2024.128912