Simulations for evaluation of kinetic methods in differential scanning calorimetry .3. Peak maximum evolution methods and isoconversional methods

被引:147
作者
Sbirrazzuoli, N
Girault, Y
Elegant, L
机构
关键词
activation energy; complex process; differential scanning calorimetry; isoconversional methods; nonisothermal kinetics; peak maximum evolution methods; simulations;
D O I
10.1016/S0040-6031(97)00023-3
中图分类号
O414.1 [热力学];
学科分类号
摘要
Various peak maximum evolution methods and isoconversional methods are compared, and the specific characteristics of each method are shown, from a mathematical viewpoint and by using simulated data. A convenient way of correcting the activation energy of the Ozawa method is proposed. Isoconversional methods should be preferred to peak maximum evolution methods, especially when an interpolation on the power and/or the temperature is performed. In the case of a complex mechanism of two parallel reactions, peak maximum evolution methods give only a mean value of the kinetic parameters, while isoconversional methods are useful in describing this complex mechanism. (C) 1997 Elsevier Science B.V.
引用
收藏
页码:25 / 37
页数:13
相关论文
共 28 条
[1]  
AKAHIRA T, 1969, 1969 JOINT CONV 4 EL
[2]  
Doyle C.D., 1961, Journal of Applied Polymer Science, V5, P285, DOI [10.1002/app.1961.070051506, DOI 10.1002/APP.1961.070051506]
[3]  
Doyle CD., 1962, J Appl Polym Sci, V6, P639, DOI DOI 10.1002/APP.1962.070062406
[4]  
Flynn J.H., 1969, POLYM LETT, V4, P323, DOI DOI 10.1002/POL.1966.110040504
[5]   THE ISOCONVERSIONAL METHOD FOR DETERMINATION OF ENERGY OF ACTIVATION AT CONSTANT HEATING RATES - CORRECTIONS FOR THE DOYLE APPROXIMATION [J].
FLYNN, JH .
JOURNAL OF THERMAL ANALYSIS, 1983, 27 (01) :95-102
[6]  
FLYNN JH, 1992, THERMOCHIM ACTA, V203, P523
[7]  
FLYNN JH, 1997, IN PRESS THERMOCHIM, V300
[8]  
Friedman H.L., 2007, J POLYM SCI C, V6, P183, DOI [DOI 10.1002/POLC.5070060121, 10.1002/polc.5070060121]
[10]   VARIATION OF PEAK TEMPERATURE WITH HEATING RATE IN DIFFERENTIAL THERMAL ANALYSIS [J].
KISSINGER, HE .
JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS, 1956, 57 (04) :217-221