The effect of TiO2 addition on the thermal behavior of sol-gel derived β-spodumene powders
1999 ◽
Vol 14
(1)
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pp. 97-102
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The effect of TiO2 addition on the crystallization and phase transformation process in Li2O · Al2O3 · 4SiO2 gels with various TiO2 contents was investigated using differential thermal analysis, x-ray diffraction, and transmission electron microscopy. The activation energy increased from 98.2 to 184.6 kcal/mol as the TiO2 content rose from 2.0 to 8.0 wt. %. The crystallization sequence and phase transformation were similar in LAS gels with various wt.% of TiO2 additions, except in the case of a 2.0 wt.% TiO2 content. During calcination from 800 to 1200 °C, crystallization of the β-spodumene phase progressed with increasing temperature, and a minor crystalline phase, rutile, also appeared.
2013 ◽
Vol 634-638
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pp. 2150-2154
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2007 ◽
Vol 90
(11)
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pp. 3651-3655
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2012 ◽
Vol 706-709
◽
pp. 741-744
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2014 ◽
Vol 543-547
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pp. 3741-3744
1995 ◽
Vol 10
(6)
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pp. 1546-1554
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