Thermal behavior, non-isothermal decomposition reaction kinetics and thermal-safety evaluation on 3-amino-4-chloroximidofurazan. | [Journal of Chemical Society of Pakistan • 2013]

Author(s):

1. Biao Yan: School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Low Metamorphic Coal clean Utilization, Yulin University, Yulin, P. R. China; School of Chemical Engineering, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi’an, P. R.China

2. Hongya Li: School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Low Metamorphic Coal clean Utilization, Yulin University, Yulin, P. R. China; School of Chemical Engineering, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi’an, P. R.China

3. Haixia Ma: School of Chemical Engineering, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi’an, P. R.China

4. Jirong Song: School of Chemical Engineering, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi’an, P. R.China; Conservation Technology Department, the Palace Museum, 4 Jingshan Qianjie Beijing, P. R. China

5. Fengqi Zhao: Science and Technology on Combustion and Explosion Laboratory, Xi’an Modern Chemistry Research Institute, Xi’an, Shaanxi, P. R.China

Abstract:

3-Amino-4-chloroximidofurazan (ACOF) is an important precursor of synthesizing new furazanon (furoxano) energetic compounds. Its thermal behavior was studied by the differential scanning calorimetry (DSC) method. The results of this study show that there are three exothermic decomposition processes. Its kinetic parameters of the intense exothermic decomposition process were obtained from the analysis of the DSC curves. The apparent activation energy, pre-exponential factor and the mechanism function are 153.54 kJmol−1, 1014.34 s−1and f(α) = 2(1-α)[–ln(1-α)]1/2, respectively. The specific heat capacity of ACOF was determined with a continuous Cp mode of micro–calorimeter. Using the relationship between Cp and T with the thermal decomposition parameters, the time of the thermal decomposition from initialization to thermal explosion (adiabatic time-to-explosion, tTIAD), the self-accelerating decomposition temperature (TSADT), thermal ignition temperature (TTIT), critical temperatures of thermal explosion (Tb) and period of validity (t0.9) were obtained to evaluate its thermal safety.

Page(s): 517-521

DOI: DOI not available

Published: Journal: Journal of Chemical Society of Pakistan, Volume: 35, Issue: 2, Year: 2013

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