热力学
活化能
等温过程
吉布斯自由能
成核
化学
热分解
分解
动力学
焓
氮气
物理化学
化学分解过程
动能
分析化学(期刊)
有机化学
物理
量子力学
作者
Mingxing Huang,Shuchen Lv,Cai-Rong Zhou
标识
DOI:10.1016/j.tca.2012.11.006
摘要
The non-isothermal decomposition kinetics of glycine was investigated using analyzer DTG-60. TG experiments were carried out under dynamic nitrogen atmosphere of 30 mL min−1 with heating rates of 10, 14, 18 and 22 K min−1. The kinetic parameters such as activation energy (E), exponential factor (A) and reaction order (n) were evaluated by Flynn–Wall–Ozawa, Doyle, Kissinger and Šatava-Šesták methods. The results show that the non-isothermal decomposition mechanism of glycine corresponds to nucleation and growth, following the Avrami–Erofeev equation with n = 1/3. Moreover, thermodynamic properties of the non-isothermal decomposition process such as the change in the values of enthalpy (ΔH), entropy (ΔS) and Gibbs free energy (ΔG) were calculated.
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