Please use this identifier to cite or link to this item: doi:10.22028/D291-24048
Title: Properties of water adsorbed in porous silica aerogels
Author(s): Da Silva, Adao A.
Donoso, Jose P.
Aegerter, Michel A.
Language: English
Year of Publication: 1992
OPUS Source: Journal of non-crystalline solids. - 145. 1992, S. 168-174
SWD key words: Aerogel
Biologischer Expositionstest
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: Silica aerogels have been prepared by hydrolysis and condensation of sols of composition TMOS-methanol-H2O with molar ratio TMOS:H2O=4:1 and volume ratio TMOS:methanol=0.2; 0.3; 0.4 and 0.6. Their true and apparent densities, BET surface area, total pore volume and pore size distribution have been systematically investigated as a function of densification heat treatment. The relaxation properties of water adsorbed on the highly reactive surface have been studied by dielectric and nuclear magnetic resonance techniques as a function of the H2O coverage (0 < è{symbol}H2O < 6) and temperature. © 1992 Elsevier Science
Link to this record: urn:nbn:de:bsz:291-scidok-21780
Date of registration: 2-Jul-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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