Kinetics and mechanism of the exothermic first-stage decomposition reaction of dinitroglycoluril

✍ Scribed by Feng-Qi Zhao; Hu Rong-Zu; Pei Chen; Yang Luo; Sheng-Li Gao; Ji-Rong Song; Qi-Zhen Shi

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 280 KB
• Volume: 22
• Category: Article
• ISSN: 0256-7660
• DOI: 10.1002/cjoc.20040220707

✦ Synopsis

Abstract

Under linear temperature increase condition, the thermal behavior, mechanism and kinetic parameters of the exothermic decomposition reaction of the title compound have been studied by means of DSC and IR. The initial stage of the mechanism was proposed. The empirical kinetic model function in differential form, apparent activation energy and pre‐exponential constant of the exothermic decomposition reaction are a 0.526, 207.0 kJ·mol^−1^ and 10^18.49^s‐^1^, respectively. The critical temperature of thermal explosion of the compound is 252.87 °C. The values of ΔS^≠^, ΔH^≠^ and ΔG^≠^ of the reaction are 128.4 J·mol‐1.K^−1^, 218.9 kJ·mol^−1^ and 152.7 kJ·mol^−1^, respectively.