Rationale and fallacy of thermoanalytical kinetic patterns How we model subject matter

• Published in: Journal of thermal analysis and calorimetry Vol. 110; no. 1; pp. 5 - 16
• Main Author: SESTAK, J
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Dordrecht Springer Netherlands 01.10.2012; Springer
• Subjects: Analytical Chemistry; Chemistry; Chemistry and Materials Science; Exact sciences and technology; General and physical chemistry; Inorganic Chemistry; Measurement Science and Instrumentation; Physical Chemistry; Polymer Sciences; Theory of reactions, general kinetics; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; DTA; Evaluation; Geometrical modeling; Misinterpretation; Nonisothermal kinetics; Reaction mechanism; Fractals; Heat inertia; Differential thermal analysis; Review; Modeling; Fractal; Solid state reaction; Non isothermal condition; Models; Thermal analysis; Kinetics
• ISSN: 1388-6150; 1572-8943
• DOI: 10.1007/s10973-011-2089-1

Modeling tradition is reviewed within its historical maturity from Plato do Penrose. Metaphors in nonisothermal kinetics achieved a wide application mostly employing models derived by means of undemanding isothermal descriptions. Geometrical basis of such modeling is revised and discussed in terms of symmetrical and asymmetrical (pentagonal) schemes. The properties of interface (reaction separating line) are found decisive in all cases of heterogeneous kinetics. Application of fractal geometry is accredited, and associated formal kinetic models based on nonintegral power exponents are acknowledged. Typical erroneous beliefs are dealt with showing common kinetic misinterpretation of measured data and associated mathematical manipulability of kinetic equations. The correction of a measured DTA peak is mentioned assuming the effects of heat inertia and temperature gradients.