The thermal decomposition of barium trifluoroacetate

► Thermal decomposition of barium trifluoroacetate: a mechanism is proposed. ► The decomposition depends on the oxygen partial pressure. ► The decomposition entails de formation of CO, CO2 and CF3CFO. ► The decomposition is an exothermic process. ► Product: face-centered BaF2. BaF2 is stable up to 1...

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Bibliographic Details
Published in:Thermochimica acta 2012-09, Vol.544, p.77-83
Main Authors: Farjas, J., Camps, J., Roura, P., Ricart, S., Puig, T., Obradors, X.
Format: Article
Language:English
Subjects:
Barium fluoride
Barium trifluoroacetate
BaTFA
Chemical thermodynamics
Chemistry
DSC
DTA
EGA
Exact sciences and technology
General and physical chemistry
General. Theory
heat production
Mass spectrometry
oxygen
thermal analysis
Thermal decomposition
thermal degradation
thermogravimetry
water vapor
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Summary:► Thermal decomposition of barium trifluoroacetate: a mechanism is proposed. ► The decomposition depends on the oxygen partial pressure. ► The decomposition entails de formation of CO, CO2 and CF3CFO. ► The decomposition is an exothermic process. ► Product: face-centered BaF2. BaF2 is stable up to 1200°C. A detailed analysis of the thermal decomposition of barium trifluoroacetate under different atmospheres is presented. Thermogravimetry, differential thermal analysis, and evolved gas analysis have been used for this in situ analysis. The presence of oxygen significantly advances the decomposition, while the presence of water vapor has a minor effect. The process is exothermic, the heat evolved being significantly larger in the presence of oxygen. The final product is BaF2, which is stable up to 1200°C. The underlying mechanism has been disclosed thanks to MS analysis of the volatiles formed during decomposition.
ISSN:0040-6031
1872-762X
DOI:10.1016/j.tca.2012.06.020