HE Zhiyong, LUO Jun, LV Chunxu, et al. Nitrolysis kinetics of DADN by N2O5/HNO3[J]. CIESC Journal, 2013, (4): 1269-1275. DOI: 10.3969/j.issn.0438-1157.2013.04.021.
HE Zhiyong, LUO Jun, LV Chunxu, et al. Nitrolysis kinetics of DADN by N2O5/HNO3[J]. CIESC Journal, 2013, (4): 1269-1275. DOI: 10.3969/j.issn.0438-1157.2013.04.021.DOI:
product were measured by HPLC during nitrolysis of DADN(1
5-diacetyl-3
7-dinitro-1
3
5
7-tetraazacyclooctane) by N2O5/HNO3 at temperatures of 303
313
323
and 333 K.Based on the mechanism of the nitrolysis reaction(first-order consecutive reaction)
the kinetic parameters were calculated from these data obtained.The activation energies were 2.3996?104 J穖ol-1 for the first step(DADN to SEX(1-acetyl-3
5
7-trinitro-1
3
5
7-tetrazacyclooctane)) and 1.6598?104 J穖ol-1 for the second step(SEX to HMX(high melt point explosive))
and the pre-exponential factors were 2.2000?104 h-1 and 6.5178?102 h-1
respectively.The reaction rate constant is larger for the fist step than for the second one. In order to check the intermediate in nitrolysis reaction of DADN
an experiment was carried out to separate and identify the intermediate(also by-product).The results indicate that this intermediate is SEX.