Abstract
A new equipment has been developed in order to apply the constant rate thermal analysis method (CRTA) to Temperature Programmed Oxidation (TPO) processes. The exhausted gases flow through an electrochemical oxygen sensor after leaving the reactor in order to monitor the oxygen consumption in the reaction. The control of the sample temperature is carried out by interfacing both the furnace and the electrical signal of the oxygen sensor to a PID controller that allows to monitor the sample temperature in such a way that the consumption of oxygen is a constant value previously selected by the user.
Zusammenfassung
Es wurde eine neue Apparatur zur Anwendung der Konstantgeschwindigkeits-Thermoanalyse (CRTA) auf temperaturprogrammierte Oxidationsprozesse (TPO) entwickelt. Die abgesaugten Gase strömen nach Verlassen des Reaktors zur Bestimmung der während der Reaktion verbrauchten Sauerstoffmenge durch einen elektrochemischen Sauerstoffsensor. Die Überwachung der Probentemperatur erfolgt, indem sowohl das Ofen-als auch das elektrische Signal des Sauerstoffsensors an einen PID-Regler weitergeleitet wird, der die Probentemperatur wiederum so regelt, daß der Sauerstoffverbrauch auf einem zuvor vom Anwender wählbaren Wert konstant gehalten wird.
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Real, C., Alcalá, M.D. & Criado, J.M. Development of a new equipment for applying the constant rate thermal analysis (CRTA) to temperature programmed oxidation (TPO) of catalysis. Journal of Thermal Analysis 38, 797–802 (1992). https://doi.org/10.1007/BF01979411
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DOI: https://doi.org/10.1007/BF01979411