Kinetic studies of the thermal decomposition of nitroguanidine using accelerating rate calorimetry
1988; Elsevier BV; Volume: 127; Linguagem: Inglês
10.1016/0040-6031(88)87486-0
ISSN1872-762X
Autores Tópico(s)Chemical Thermodynamics and Molecular Structure
ResumoAbstract The thermal decomposition of nitroguanidine has been studied using accelerating rate calorimetry. The experimental data have been treated by three methods to evaluate the activation energy and frequency factor. Two methods using data gathered during the complete reaction yield very high activation energies while the value estimated using only the measurements in the initial stage of the decomposition is much lower. Neither dilution of the sample with inert material nor substitution of nitrogen for air in the sample bomb had any significant effect on the rate of the decomposition. Rate constants were compared with those reported in previous studies and it is concluded that a significant change in the mechanism of decomposition occurs in the neighbourhood of 160°C.
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