Journal
THERMOCHIMICA ACTA
Volume 355, Issue 1-2, Pages 155-163Publisher
ELSEVIER
DOI: 10.1016/S0040-6031(00)00445-7
Keywords
kinetics; isothermal; nonisothermal; arrhenius parameters; decomposition; solids
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The paper discusses the kinetic results, which the participants in the ICTAC Kinetics Project have produced from the provided isothermal and nonisothermal data on a hypothetical simulated process, as well as on the thermal decomposition of ammonium perchlorate. The majority of the participants have applied various model-free techniques that employ multiple sets of isothermal or/and nonisothermal data obtained at different temperatures or/and at different heating rates. These 'multi-set' methods have been very successful in detecting multi-step kinetics in the data provided. Fitting data to multi-step kinetic models has allowed the 'true mechanism' to be guessed for the simulated data. For the real data, the mechanistic guesses happened to be uncertain. Various 'multi-set' methods have allowed fairly consistent values of the Arrhenius parameters to be derived from isothermal and nonisothermal data. (C) 2000 Elsevier Science B.V. All rights reserved.
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