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Process for the preparation of monolithic silica aerogels

Abstract : A process for the preparation of a silica aerogel that includes subjecting a mixture that includes an organosilicon compound and ethyl acetoacetate to hydrolysis and polycondensation in an acidic medium to obtain a transparent gel. The organic solvent is substituted by liquid carbon dioxide and the carbon dioxide is evacuated under supercritical conditions of the carbon dioxide to obtain an aerogel
keyword : silica aerogel
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Brevet
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00617987
Contributeur : Magalie Prudon <>
Soumis le : mercredi 31 août 2011 - 11:27:34
Dernière modification le : jeudi 24 septembre 2020 - 17:22:03

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  • HAL Id : hal-00617987, version 1

Citation

Gérard Pajonk, Elimane Elaloui, Redouane Begag, Marcel Durant, Bruno Chevalier, et al.. Process for the preparation of monolithic silica aerogels. United States, Patent n° : US5795557. 1998, 7 p. ⟨hal-00617987⟩

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