Kinetics of BaBr2 · 2 H2O Dehydration: Comparison between Isothermal and Non-isothermal Methods

For the dehydration processes BaBr 2 • 2 H 2 O → BaBr 2 • H 2 O + H 2 O (I) BaBr 2 • H 2 O → BaBr 2 + H 2 O (II) a comparison was made between the experimental non-isothermal ɑ vs. t curves and those calculated on the basis of a previous isothermal study. It was observed that for low heating rates, when the "thermal lag" is negligible, the dynamic measurements are in good agreement with the isothermal ones. Furthermore, for process (I), two mathematical methods proposed for the interpretation of the non-isothermal TG curves were applied and the kinetic parameters so obtained were discussed