| Autor: |
Veljković, I., Poleti, D., Karanović, Lj, Zdujić, M., Branković, G. |
| Předmět: |
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| Zdroj: |
Science of Sintering; 2011, Vol. 43 Issue 3, p343-351, 9p |
| Abstrakt: |
Extra phase-pure Li4Ti5O12 spinel with particle sizes less than 500 nm was synthesized by solid state reaction of mechanochemicaly activated mixture of nano anatase and Li2CO3 for a very short annealing time, 4 h at 800 °C. Structural and microstructural properties, the mechanism of solid state reaction between anatase and Li2CO3 as well as thermal stability of prepared spinel were investigated using XRPD, SEM and TG/DSC analysis. The mechanism of reaction implies decomposition of Li2CO3 below 250 ºC, formation of monoclinic Li2TiO3 as intermediate product between 400 and 600 °C and its transformation to Li4Ti5O12 between 600-800 ºC. The spinel structure is stable up to 1000 ºC when it is decomposed due to Li2O evaporation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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