TY - JOUR
T1 - Thermal behavior of 3-Nitro-5-guanidino-1, 2, 4-oxadiazole
AU - Fu, Zhan Da
AU - Wang, Yang
AU - Chen, Fu Xue
PY - 2012/10
Y1 - 2012/10
N2 - 3-Nitro-5-guanidino-1, 2, 4-oxadiazole (NOG) was obtained by oxidation of diaminoglycoluril (AG) with in situ generated dimethyldioxirane (DMDO). The particle morphological appearance of NOG prepared with the quick precipitation method was studied by scanning electron microscopy (SEM). The thermal behavior of NOG was studied by differential scanning calorimetry (DSC) and differential thermal/thermo-gravimetric analyzer (TG-DTA). The apparent activation energy (E) and pre-exponential factor (A) of the exothermic decomposition reaction, the peak temperature (T P0) of heating rate β→0, and activation entropy (ΔS ≠), activation enthalpy (ΔH ≠), activation Gibbs free energy (ΔG ≠) at T P0 of the reaction and the critical temperature of thermal explosion (T b) were calculated. The results show that NOG has better heat-resistance ability. The decomposition temperature of NOG is 290°C. The critical temperature of thermal explosion (T b) is 291.56°C, ΔS ≠ is 232.35 J·k -1·mol -1, ΔH ≠ and ΔG ≠ is 267.36 kJ·mol -1 and 138.42 kJ·mol -1, respectively.
AB - 3-Nitro-5-guanidino-1, 2, 4-oxadiazole (NOG) was obtained by oxidation of diaminoglycoluril (AG) with in situ generated dimethyldioxirane (DMDO). The particle morphological appearance of NOG prepared with the quick precipitation method was studied by scanning electron microscopy (SEM). The thermal behavior of NOG was studied by differential scanning calorimetry (DSC) and differential thermal/thermo-gravimetric analyzer (TG-DTA). The apparent activation energy (E) and pre-exponential factor (A) of the exothermic decomposition reaction, the peak temperature (T P0) of heating rate β→0, and activation entropy (ΔS ≠), activation enthalpy (ΔH ≠), activation Gibbs free energy (ΔG ≠) at T P0 of the reaction and the critical temperature of thermal explosion (T b) were calculated. The results show that NOG has better heat-resistance ability. The decomposition temperature of NOG is 290°C. The critical temperature of thermal explosion (T b) is 291.56°C, ΔS ≠ is 232.35 J·k -1·mol -1, ΔH ≠ and ΔG ≠ is 267.36 kJ·mol -1 and 138.42 kJ·mol -1, respectively.
KW - 3-nitro-5-guanidino-1, 2, 4-oxadiazole (NOG)
KW - Differential scanning calorimetry (DSC)
KW - Energetic materials
KW - Iso-furazan
KW - Thermal behavior
UR - http://www.scopus.com/inward/record.url?scp=84868648272&partnerID=8YFLogxK
U2 - 10.3969/j.issn.1006-9941.2012.05.014
DO - 10.3969/j.issn.1006-9941.2012.05.014
M3 - Article
AN - SCOPUS:84868648272
SN - 1006-9941
VL - 20
SP - 583
EP - 586
JO - Hanneng Cailiao/Chinese Journal of Energetic Materials
JF - Hanneng Cailiao/Chinese Journal of Energetic Materials
IS - 5
ER -
