ICTAC Kinetics Committee recommendations for performing kinetic computations on thermal analysis data

► Kinetics concepts are introduced and advices on collecting data are given. ► Methods based on multiple temperature programs are recommended. ► Evaluation of log A and f( α) or g( α) for isoconversional methods is described. ► Principles of securing reliability of model-fitting computations are off...

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Vydané v:Thermochimica acta Ročník 520; číslo 1; s. 1 - 19
Hlavní autori: Vyazovkin, Sergey, Burnham, Alan K., Criado, José M., Pérez-Maqueda, Luis A., Popescu, Crisan, Sbirrazzuoli, Nicolas
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Oxford Elsevier B.V 10.06.2011
Elsevier
Predmet:
activation energy
Analytical chemistry
Calorimetry
Chemical and thermal methods
Chemical Sciences
Chemistry
Computation
Crosslinking
Crystallization
Curing
Decomposition
Degradation
Differential scanning calorimetry
Differential thermal analysis
Exact sciences and technology
Kinetics
Material chemistry
Mathematical models
prediction
Reaction kinetics
Thermal analysis
Thermogravimetry
Degradation
Curing
Crosslinking
Decomposition
Kinetics
Crystallization
Prediction
Models
Thermal analysis
ISSN:0040-6031, 1872-762X
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Shrnutí:► Kinetics concepts are introduced and advices on collecting data are given. ► Methods based on multiple temperature programs are recommended. ► Evaluation of log A and f( α) or g( α) for isoconversional methods is described. ► Principles of securing reliability of model-fitting computations are offered. ► Problems of kinetic predictions and approaches to solving them are discussed. The present recommendations have been developed by the Kinetics Committee of the International Confederation for Thermal Analysis and Calorimetry (ICTAC). The recommendations offer guidance for reliable evaluation of kinetic parameters (the activation energy, the pre-exponential factor, and the reaction model) from the data obtained by means of thermal analysis methods such as thermogravimetry (TGA), differential scanning calorimetry (DSC), and differential thermal analysis (DTA). The recommendations cover the most common kinetic methods, model-free (isoconversional) as well as model-fitting. The focus is on the problems faced by various kinetic methods and on the ways how these problems can be resolved. Recommendations on making reliable kinetic predictions are also provided. The objective of these recommendations is to help a non-expert with efficiently performing analysis and interpreting its results.
Bibliografia:http://dx.doi.org/10.1016/j.tca.2011.03.034
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ISSN:0040-6031
1872-762X
DOI:10.1016/j.tca.2011.03.034