Estimation of rate coefficients from the overall amount of material reacted at various scan rates

A method to evaluate the temperature dependence of the reaction rate from the variation of the amount reacted at the end of a number of experiments at various scan rates is deduced from the fundamental equations of DTA. The method was applied to the synthesis of Pääkkönenite and gave parameters in g...

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Bibliographic Details
Published in:Thermochimica acta 1996-10, Vol.287 (2), p.327-342
Main Authors: Rosso, Fabio, Bernardini, Gian Piero, Borrini, Daniele, Danti, Costanza, Guarini, Giulio G.T., Mazzetti, Giuseppe
Format: Article
Language:English
Subjects:
Chemistry
Conversion and scan rate
Elements and non-metal compounds (oxides, hydroxides, hydrides, sulfides, carbides, ...)
Exact sciences and technology
Inorganic chemistry and origins of life
Kinetic parameters
Preparations and properties
Pääkkönenite
Theoretical analysis
Thermal methods
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Summary:A method to evaluate the temperature dependence of the reaction rate from the variation of the amount reacted at the end of a number of experiments at various scan rates is deduced from the fundamental equations of DTA. The method was applied to the synthesis of Pääkkönenite and gave parameters in good agreement with those determined for the same reaction by using other experimental data and the differential method of Sharp and Wentworth. Furthermore, an empirical procedure previously used to get the same results is compared with the present elaboration. The parameters evaluated are reported and discussed.
ISSN:0040-6031
1872-762X
DOI:10.1016/S0040-6031(96)03006-7