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Kinetics of the thermal decomposition of alkaline earth metal hydrofluorides

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Abstract

The thermal stability of alkaline earth metal hydrofluorides was studied by means of a Derivatograph. The values of the activation energy, reaction order and rate constant were determined. The comparison of the kinetic parameters of the decomposition process for the complete series of hydrofluorides studied led to a certain regularity in the differences in their thermal stabilities and its correlation with the strength of the hydrogen bond in their structure.

Résumé

On a étudié la stabilité thermique des hydrogénofluorures des métáux alcalinoterreux et déterminé les valeurs des énergies d'activation, des ordres de réaction et des constantes de vitesse de réaction à l'aide d'un ”Dérivatographe”. Après comparaison des paramètres cinétiques on a pu établir une certaine régularité dans le changement de la stabilité thermique en corrélation avec la force de liaison de l'hydrogène dans la structure.

Zusammenfassung

Die thermische Stabilität von Erdalkalihydrofluoriden wurde mit Hilfe eines Derivatographen untersucht, die Werte der Aktivierungsenergien, der Reaktionsordnung und der Geschwindigkeitskonstanten bestimmt. Der Vergleich der kinetischen Parameter des Zersetzungsvorganges wies auf eine gewisse Regelmäßigkeit in ihrer verschiedenen thermischen Stabilität, die in Zusammenhang mit der Stärke ihrer strukturalen Wasserstoffbindung steht.

Резюме

Исследование на дери ватографе термостабильность г идрофторидов щелочн оземельных металлов. Определены значения энергии акт изации, порядок реакции и постоянная скорости. Сравнение кинетичес ких параметров процесса распада для целого ряда исследованных г идрофторидов дает во зможность обнаружить некотору ю регулярность в изменении их термос табильности и ее соот ношения с прочностью водородн ой связи в их структуре.

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Opalovsky, A.A., Fedorov, V.E. & Fedotova, T.D. Kinetics of the thermal decomposition of alkaline earth metal hydrofluorides. Journal of Thermal Analysis 1, 301–310 (1969). https://doi.org/10.1007/BF01911800

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  • DOI: https://doi.org/10.1007/BF01911800

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