期刊
JOURNAL OF PHYSICAL CHEMISTRY A
卷 106, 期 12, 页码 2862-2868出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp012246b
关键词
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The combined kinetic analysis of experimental data for solid-state reactions obtained under different experimental conditions is discussed. It is shown that the combined analysis of experimental data by means of the logarithmic expression of the general differential equation is a suitable method for the determination of the kinetic parameters. In the derivation of this equation, no assumptions are made of the way samples are heated. Therefore, any set of T - oL - dcL/dt data should fit the equation regardless of the experimental procedure, i.e., isothermal, linear heating rate, modulated temperature, sample controlled, etc, used for their calculation. Thus, it can be used for the analysis of series of experiments performed under the same or different conditions. The method is tested with simulated and experimental curves obtained under different conditions. The kinetics of crystallization of Ge0.3Sb1.4S2.7 glass is studied from a series of curves obtained under linear heating rate conditions. Additionally, the kinetics of decomposition of a siderite sample is also studied from a set of two curves obtained under linear heating, and constant rate conditions.
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