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Reuß, Michael und Ratke, Lorenz (2008) Subcritically dried RF-aerogels catalysed by hydrochloric acid. Journal of Sol-Gel Science and Technology 47:74.
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Kurzfassung
Hydrochloric acid (HCl) used as catalyst for the preparation of RF-aerogels leads to organic aerogels in very short gelation times. The gelation time can be varied from a few seconds to minutes. The wet gels can be dried under ambient conditions. By variation of the sol composition or catalyst concentration the microstructure of the dry gels can be modified. The aerogel densities are in the range of 210-410 kg/m<sup>3</sup>. The particle sizes, determined by scanning electron microscopy (SEM), are in the range of 700 to 1500 nm. The particles look essentially spherical and their size spectrum can be close to monodisperse. The specific surface is measured by nitrogen adsorption (BET). Thermogravimetry (TGA) is employed to study the drying process, annealing reactions and decomposition of the aerogel into a carbon aerogel.
| elib-URL des Eintrags: | https://elib.dlr.de/52140/ | ||||||||||||
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| Dokumentart: | Zeitschriftenbeitrag | ||||||||||||
| Titel: | Subcritically dried RF-aerogels catalysed by hydrochloric acid | ||||||||||||
| Autoren: |
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| Datum: | 2 April 2008 | ||||||||||||
| Erschienen in: | Journal of Sol-Gel Science and Technology 47:74 | ||||||||||||
| Referierte Publikation: | Ja | ||||||||||||
| Open Access: | Nein | ||||||||||||
| Gold Open Access: | Nein | ||||||||||||
| In SCOPUS: | Nein | ||||||||||||
| In ISI Web of Science: | Ja | ||||||||||||
| Status: | veröffentlicht | ||||||||||||
| Stichwörter: | Sol-gel, RF-aerogels, Subcritically drying, Inorganic catalysis | ||||||||||||
| HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||||||
| HGF - Programm: | Weltraum (alt) | ||||||||||||
| HGF - Programmthema: | W - keine Zuordnung | ||||||||||||
| DLR - Schwerpunkt: | Weltraum | ||||||||||||
| DLR - Forschungsgebiet: | W - keine Zuordnung | ||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | W - keine Zuordnung (alt) | ||||||||||||
| Standort: | Köln-Porz | ||||||||||||
| Institute & Einrichtungen: | Institut für Materialphysik im Weltraum | ||||||||||||
| Hinterlegt von: | Reuß, Dr.rer.nat. Michael | ||||||||||||
| Hinterlegt am: | 14 Aug 2008 | ||||||||||||
| Letzte Änderung: | 27 Apr 2009 14:31 |
Verfügbare Versionen dieses Eintrags
- Subcritically dried RF-aerogels catalysed by hydrochloric acid. (deposited 14 Aug 2008) [Gegenwärtig angezeigt]
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