✍ Scribed by S. Salimian; R.K. Hanson; C.H. Kruger
No coin nor oath required. For personal study only.
Ammonia oxidation, using N20 as a thermal source of O atoms, has been studied in a shock tube in the temperature range 1600-210OK. Concentration-time profiles of NH 3. N,O, H ~O, NO, and OH and relative concentration histories of NH 2 were monitored behind incident shock waves using laser-based absorption and emission spectroscopy techniques. A detailed kinetics model has been developed which successfully predicts the experimental records of the measured species under lean INH3/N20 : 1/3,~ and rich INH3/N20 : I/1~ conditions. Reactions involving the HNO radical, which is primarily produced through the reaction of O atoms with NH 2, provide the major NO producing paths: the reactions of N and NH 2 with NO are the important NO removing steps. Under rich conditions, NH,-NHi interactions play a critical role in the fast removal of ammonia and production of N e through non-NO paths.
📜 SIMILAR VOLUMES
## Therateconstantexpression, k&.0x 1014exp( -95 kJ/RT) cm3 mol-' s-t, for H+O ,+O + OH was determined from cw laser absorption spectroscopic measurements of OH radical concentration growth rates in rich Hz-OZ-Ar mixtures heated to temperatures between 1900 and 2650 K in reflected shock waves.