Thermal Behaviour of Ammonium Oxofluorotitanates(IV)

被引:0
作者
N. M. Laptash
E. B. Merkulov
I. G. Maslennikova
机构
[1] Russian Academy of Sciences,Institute of Chemistry, Far Eastern Branch
来源
Journal of Thermal Analysis and Calorimetry | 2001年 / 63卷
关键词
ammonium oxofluorotitanates; quasi-isobaric thermal analysis; thermal decomposition;
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摘要
The thermal behaviour of ammonium oxofluorotitanates (NH4)3TiOF5, (NH4)2TiOF4 and NH4TiOF3 was investigated by thermoanalytical, X-ray and IR spectroscopic methods. The first decomposition stages under quasi-isobaric conditions are characterized by the formation of (NH4)2TiF6 and ammonium oxofluorotitanate with the less content of ammonium and fluorine than in the initial compound. The decomposition process is accompanied by the Ti(IV) reducing due to ammonia evolved. The new ammonium oxofluorotitanate of high volatility was isolated and characterized. Ammonium-containing non-stoichiometric titanium oxyfluorides are the final products of thermal decomposition of ammonium oxofluorotitanates.
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页码:197 / 204
页数:7
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