| Autor: |
Samuneva, B., Dimitrov, V., Dimitriev, Y., Chernev, V., Gochev, G. |
| Zdroj: |
Journal of Sol-Gel Science and Technology; January 1994, Vol. 2 Issue: 1-3 p913-915, 3p |
| Abstrakt: |
Blue-coloured gels have been prepared in the VO2-SiO2 system up to 80 mol% VO2 by sol-gel technology using TEOS and aqueous solutions of VOSO4·5H2O. It is established by means of VIS and ESR spectra that at low temperatures VO2+ complexes are formed. An oxidation of V4+ has taken place with increasing temperature, and V2O5 and cristobalite have been separated. Silica gel glasses stable up to 800°C have been obtained from gels containing 1–3 mol% VO2. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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