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Details for article 82 of 262 found articles
| Title: |
Drying of Silica Alcogels by Liquid and Supercritical C02 |
| Author: |
Rogacki, G. Wawrzyniak, P. Bartczak, Z. |
| Appeared in: |
Drying technology |
| Paging: | Volume 14 (1996) nr. 2 pages 259-270 |
| Year: |
1996 |
| Contents: |
Gels dried in supercritical conditions give a new class of materials called aerogels. The process of silica aerogel production in which extraction with liquid (or supercritical) carbon dioxide is used, consists of four main stages: elution, diffusion, heating and evacuation. Aerogel production from silica gels prepared from tetraethoxysilane is described. The autoclave process which started with alcohol-liquid carbon dioxide exchange was followed by supercritical evacuation. Some important technical aspects of the process are considered. The effect of elution rate, temperature and duration of diffusion is investigated. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 82 of 262 found articles
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