| Autor: | A. Di Bartolomeo, Tadeusz Olczak, Carlo Alvani, S. Casadio, W. Łada, F. Pierdominici, B. Sartowska, Andrzej G. Chmielewski, Deptula Andrzej, P. Carconi |
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| Rok vydání: | 2003 |
| Předmět: |
Aqueous solution
Materials science Extraction (chemistry) General Chemistry Thermal treatment Condensed Matter Physics Chloride Electronic Optical and Magnetic Materials Biomaterials chemistry.chemical_compound chemistry Nitric acid Emulsion Materials Chemistry Ceramics and Composites medicine Lithium titanate Dissolution medicine.drug Nuclear chemistry |
| Zdroj: | Journal of Sol-Gel Science and Technology. 26:207-212 |
| ISSN: | 0928-0707 |
| Popis: | Microspheres of Li2TiO3 were fabricated by a classical, inorganic sol-gel process from commercially available TiCl4. Elaborated process consists of the following main steps: (1) dissolving of TiCl4 in concentrated aqueous HCl and addition of LiOH; (2) formation of sol emulsion in 2-ethylhexanol-1 containing the surfactant SPAN-80 (EH); (3) gelation of emulsion drops by extraction of water with partially dehydrated EH; (4) impregnation of gel to Li:Ti molar ratio MR = 2; (5) thermal treatment at 1200°C in order to receive chloride free product. This temperature can be significantly lowered (to 750°C) by dechlorination starting solution TiCl4 by chemical treatment of the with nitric acid to form of nitrate-stabilized titania sols. Tritium release from sol-gel made Li2TiO3 microspheres were found very close to that observed for other traditional materials, however for the first sample process starts slightly earlier. |
| Databáze: | OpenAIRE |
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