Investigations under quasi-isothermal and quasi-isobaric conditions by means of the Derivatograph |
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Authors: | F. Paulik J. Paulik |
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Affiliation: | 1. Institute for General and Analytical Chemistry, Technical University, Budapest, Hungary
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Abstract: | It is proved that under the conditions of dynamic thermoanalytical examinations the course of a decomposition reaction is determined primarily by the gas- and heattransfer partial processes, i.e. indirectly by the experimental conditions. This raises the question of whether it is justified to make kinetic calculations based on the shapes of similar curves. A new measuring technique is reported which uses a slightly modified Derivatograph. With this new method decomposition reactions can be examined under “quasi-isothermal” and “quasi-isobaric” conditions. The pernicious effects of the gas- and heat-transfer processes are thus eliminated, and the shapes of the curves obtained provide the possibility of studying the decomposition reactions in a new and more thorough way. |
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