Add time:07/28/2019         Source:sciencedirect.com

The evaluation of kinetic parameters and mechanism of the thermal decomposition of barium perchlorate trihydrate (BP) from non-isothermal analytical measurements using TG, DTG, and DTA have been obtained in the presence of β-MnO2 and Eu2O3. Both oxides catalyze the thermal decomposition of BP, and from the kinetic viewpoint they lower the activation energy by a factor of 2.5. Both of them remain chemically unchanged during the course of the decomposition of BP. A new mechanism has been proposed for the dehydration process to interpret the role of the oxide in it. Methods such as those of Freeman and Carroll and Coates and Redfern have been employed to estimate from TG curves, order of rection, activation energy, and pre-exponential factor for the thermal decomposition of BP, alone and in binary mixtures with each oxide. For the sake of checking, a modified computer program for the Coates and Redfern method has been introduced to compute the above mentioned parameters.

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