Kinetics of Thermal Decomposition of 2, 4, 6-Trinitro-3, 5-Difluorophenol

被引：0
|
作者：
Yang L. [1 ]
Liu Y.-C. [1 ]
Jing S.-M. [1 ]
机构：
[1] School of Environment and Safety Engineering, North University of China, Taiyuan
来源：
Hanneng Cailiao/Chinese Journal of Energetic Materials | 2020年 / 28卷 / 07期
关键词：
2; 4; 6-trinitro-3; 5-difluorophenol; Activation energy; Non-isothermal kinetics; Thermal decomposition;
D O I：
10.11943/CJEM2019259
中图分类号：
学科分类号：
摘要：
In order to study the thermal decomposition behavior of 2, 4, 6-trinitro-3, 5-difluorophenol, the non-isothermal decomposition reaction kinetics of 2, 4, 6-trinitro-3, 5-difluorophenol was studied by thermogravimetric-differential thermal analysis (TG-DTA). TG-DTA experiments were carried out under dynamic nitrogen atmosphere of 30 mL•min-1 with heating rates of 5, 10, 15 K•min-1 and 20 K•min-1, respectively. The thermal decomposition parameters of 2, 4, 6-trinitro-3, 5-difluorophenol, such as activation energy (E) and pre-exponential factor (A), were calculated by F-W-O, Doyle, Kissinger and Satava- Sestak methods, respectively. Results show that the compound converts into molten state first and then decompose along with rapidly exothermic. The average apparent activation energy of thermal decomposition was calculated to be 122.65 kJ•mol-1 with a pre-exponential factor of 1.37×1013 min-1, and the integral form of reaction mechanism function is g(α)=α1/2. The calculated activation enthalpy (ΔH^≠) in the thermal decomposition process according to its activation energy and pre-exponential factor is 123.06 kJ•mol-1, the activation entropy (ΔS^≠) is 121.46 J•mol-1•K-1, and the Gibbs free energy of activation (ΔG^≠) is 62.98 kJ•mol-1. © 2020, Editorial Board of Chinese Journal of Energetic Materials. All right reserved.
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页码：690 / 694
页数：4
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