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Title of article :
Additional considerations to the paper entitled: “Computational aspects of kinetic analysis. Part B: The ICTAC Kinetics Project—the decomposition kinetics of calcium carbonate revisited, or some tips on survival in the kinetic minefield.”
Author/Authors :
A. Marcilla، نويسنده , , J.C. Garc?a-Quesada، نويسنده , , R. Ruiz-Femenia، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2006
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Abstract :
Dr. Marek Maciejewski reported in 1999 in an excellent work the second part of a series of papers dealing with the results of the International Confederation for Thermal Analysis and Calorimetry (ICTAC) Kinetic Analysis Project [M.E. Brown, M. Maciejewski, S. Vyazovkin, R. Nomen, J. Sempere, A. Burnham, J. Opfermann, R. Strey, H.L. Anderson, A. Kemmler, R. Keuleers, J. Janssens, H.O. Desseyn, C.-R. Li, T.B. Tang, B. Roduit, J. Malek, T. Mitsuhashi, Thermochim. Acta 355 (2000) 125–143; M. Maciejewski, Thermochim. Acta 355 (2000) 145–154; S. Vyazovkin, Thermochim. Acta 355 (2000) 155–163; A.K. Burnham, Thermochim. Acta 355 (2000) 165–170; B. Roduit, Thermochim. Acta 355 (2000) 171–180]. In this work Dr. Maciejewski emphasized the very limited applicability of the kinetic methods that use single-heating rate data and stated that to obtain reliable kinetic descriptions, computational methods that employ multi-heating rate data should be used for treating multi-step processes. The reasons supporting this argument are presented in his “Fact 2”, where it was stated that two different models represent very similar α–T curves at one heating rate (5 °C/min), but at other two different heating rates (2 and 10 °C/min) the same kinetic parameters used at 5 °C/min illustrate very different curves. In this letter to the editor, we show different examples where we intend to illustrate that interactions among parameters are even higher than this author described, since there is a possibility that different models, could be able to reproduce the same conversion curves at different heating rates simultaneously.
Keywords :
Kinetic analysis , Kinetic models
Journal title :
Thermochimica Acta
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