Thermal decomposition of energetic materials. 8. Evidence of an oscillating process during the high-rate thermolysis of hydroxylammonium nitrate, and comments on the interionic interactions
Relatively dry, solid hydroxylammonium nitrate (HAN), (NH/sub 3/OH)NO/sub 3/, was examined by IR spectroscopy from 170 K to well above its decomposition point. The modes in the 2600-2950-cn/sup -1/ range are assigned to -NH/sub 3//sup +/ combination tones, rather than to nu(OH) as was recently proposed for aqueous HAN solutions. Frequency-to-distance correlations for solid HAN cast doubt on the viability of using nu(NH/OH) fundamentals to determine accurate interionic distances in HAN. Several of the thermolysis products of HAN (HNO/sub 3/, N/sub 2/O, and NO/sub 2/) were quantified in real time by rapid-scan FTIR and were found to oscillate when solid HAN and aqueous HAN solutions were pyrolyzed at a high rate (130 K s/sup -1/) with pressures greater than or equal to 100 psi of Ar. The onset of the oscillation is delayed by increasing the initial H/sub 2/O content. The period of oscillation at constant pressure increases with the heating rate. Some comments on the reactions that may lead to the decomposition products of HAN are made based on these findings. 28 references, 5 figures, 1 table.
- Research Organization:
- Univ. of Delaware, Newark
- OSTI ID:
- 5825445
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 90:1; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Catalytic Decomposition of Hydroxylammonium Nitrate Ionic Liquid: Enhancement of NO Formation
Related Subjects
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ABSORPTION SPECTROSCOPY
AMMONIUM COMPOUNDS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DATA
DECOMPOSITION
EXPERIMENTAL DATA
INFORMATION
INFRARED SPECTRA
KINETICS
LOW TEMPERATURE
MEDIUM PRESSURE
MEDIUM TEMPERATURE
NITRATES
NITROGEN COMPOUNDS
NORMAL-MODE ANALYSIS
NUMERICAL DATA
OSCILLATIONS
OXYGEN COMPOUNDS
PYROLYSIS
REACTION KINETICS
SPECTRA
SPECTROSCOPY
THERMOCHEMICAL PROCESSES