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Sol-gel synthesis and characterization of silica, aluminia, titania and their mixed oxide aerogelsNovak, Zoran ...The preparation and characterization of aerogels metal oxides (SiO2, Al2O3,TiO2), binary mixed oxides (SiO2-Al2O3 and SiO2-TiO2), and various NiO aerogels (NiO-Al2O3, NiO-SiO2 and NiO-SiO2-Al2O3) is ... presented. The preparation of aerogels includes several steps: sol-gel synthesis, drying and,finally, thermal treatment. Excellent properties of aerogels, obtained with the sol-gel synthesis, were preserved with supercritical drying with Co2.Due to this fact, supercritical drying out at the conditions above binarycritical curve of the sovent-Co2, where the solvent and Co2 are completely miscible. All produced aerogels were characterizied by means of nitrogen physisorption at 77K, single point BET surface area measurements (adsorption of argon-nitrogen gas mixture), X-ray diffraction and thermal analyses.Source: Chemische Technik. - ISSN 0045-6519 (Jg. 51, Heft 4, (Juli-August 1999), str. 191-195)Type of material - article, component partPublish date - 1999Language - englishCOBISS.SI-ID - 4719126
Author
Novak, Zoran |
Knez, Željko |
Kaučič, Venčeslav |
Novak Tušar, Nataša
Topics
kemijska tehnologija |
aerogeli |
sol-gel sinteza |
karakterizacija |
superkitično sušenje |
superkritični CO2 |
termične analize |
rentgenska analiza |
chemical engineering |
aerogels |
sol-gel synthesis |
characterization |
suprcritical drying |
supercritical CO2 |
thermal analyses |
X-ray analysis
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Database name | Field | Year |
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Novak, Zoran | 13568 |
Knez, Željko | 02619 |
Kaučič, Venčeslav | 03373 |
Novak Tušar, Nataša | 13399 |
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