LaCoO3 formation from precursors obtained by water-based sol–gel method with citric acid

被引：0
|
作者：
Luminita Predoana
Barbara Malic
Maria Zaharescu
机构：
[1] Romanian Academy,“Ilie Murgulescu” Institute of Physical Chemistry
[2] Jozef Stefan Institute,undefined
来源：
Journal of Thermal Analysis and Calorimetry | 2009年 / 98卷
关键词：
Sol–gel processes; LaCoO; TG/AEG; Phase formation;
D O I：
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学科分类号：
摘要：
In the present work the LaCoO3 formation from gel precursors obtained by water-based sol–gel method with citric acid was studied. As precursors La and Co nitrates were used. The obtained gels were analyzed by TG/DTA and TG/AGE. The decomposition of the gels takes place in two main steps with the evolution of the same volatile compounds (H2O, CO2 si NO2) leading to the conclusion that two types of bonding of the components in the gels occurred. The decomposition of the gels takes place up to 400 °C. The gels thermally treated at 600 °C lead to single pure perovskite rhombohedral phase of lanthanum cobalt oxide (LaCoO3).
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页码：361 / 366
页数：5
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