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Journal of Thermal Analysis and Calorimetry
Authors: Laura Plazas Tovar, Maria Regina Wolf Maciel, Antonio S. Araujo, Rubens Maciel Filho, César B. Batistella, and Lílian C. Medina

equation as follows: where α is the conversion degree, E the activation energy of the reaction, R the gas constant, A the pre-exponential factor, and T the temperature. Theoretical background Kinetic

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the reaction mechanism, and k is the specific rate constant given by the Arrhenius equation: where A is the pre-exponential factor in min −1 , E is the activation energy (kJ/mol), R is the universal gas constant (J/mol/K), and T is the

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]. In the present study, kinetics of glass transitions of Ti 50 Cu 20 Ni 30 and Fe 67 Co 18 B 14 Si 1 metallic glasses are studied using differential scanning calorimetry (DSC) for four different heating rates and activation energies are calculated

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kinetic parameters change. Kinetic analysis is based on the rate equation: 6 where A is the pre-exponential factor (min −1 ), β is the heating rate (°C min −1 ), E A is the activation energy (J mol −1 ), the term f (α) represents the model chosen to

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] investigated the kinetics of the dehydroxylation of kaolinite under isothermal conditions by TG. They evaluated the overall activation energy ( E A ) and pre-exponential (frequency) factor ( A ) from a series of thermogravimetry experiments in the temperature

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, conversion-) dependent variations in the overall apparent activation energy during the curing of the epoxy-anhydride system as determined by model-free kinetic thermo-analytical methods. Two important phase transitions occur during curing, namely, gelation

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decomposition kinetic of cis -[Ru(L 1 )(L 2 )(NCS) 2 ] complex The kinetic parameters (activation energies, E a ; reaction order, n ; and Arrhenius constant, A ) of the decomposition process in non-isothermal conditions can be calculated by model

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reactions as the activation energy value changes with heating rate [ 9 , 10 ]. Thermal degradation of coal is a complex process, and a number of consecutive parallel reactions are involved in the process. Hence, it is difficult to analyze the kinetic

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decomposition of the sample; E is the activation energy(J mol −1 ); A is frequency factor, namely the pre-exponential factor (min −1 ); R is the gas constant (J (mol K) −1 ); T is the absolute temperature(K); f (α) is the kinetic function model, whose

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] and Kissinger method [ 29 ] are of importance for kinetic analysis. Isoconversional kinetics rests on evaluating the dependence of the apparent activation energy on conversion or temperature and use such a dependence to make kinetic predictions or to

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