Integral approximations for nonisothermal kinetics

Mathematical considerations for nonisothermal kinetics in thermal decomposition

“…Since the original work of Akahira [35] a large number of approximations to p(x) have been published, Doyle [36], Coats and Redfern [31], Agrawal and Sivasubramanian [37].…”

Thermal degradation kinetics and solid state, temperature dependent, electrical conductivity of charge-transfer complex of phenothiazine with chloranil and picric acid

“…The aim of the kinetic study of thermal analysis data is to find out the most probable kinetic model which best describes the process and allows the calculation of reliable values for the parameters like the order of reaction, activation energy, enthalpy of reaction, entropy of reaction, Gibb's free energy changes and the frequency factor. Many methods exist to characterize the degradation kinetics of various materials (Freeman and Carrol 1958;Friedman 1963;Horowitz and Metzger 1963;Coats and Redfern 1964;Ozawa 1965;Flynn and Wall 1966;Broido 1969;ASTM 1984;Agarwal and Sivasubramanian 1987). Three methods have been employed, Broido's, CoatsRedfern (C-R) and Horowitz-Metzger (H-M), for the evaluation of decomposition kinetics and the results obtained are compared and presented in table 1.…”

Solid state electrical conductivity and thermal degradation studies on some phenothiazine derivatives

“…Many methods exist to characterize the degradation kinetics of various materials [30][31][32][33][34][35]. We have employed Broido's, Coats-Redfern (C-R) and Horowitz-Metzger (H-M) methods for the evaluation of decomposition kinetics and to compare the results obtained by the three methods [36][37][38].…”