- Author
-
Salimian, S.
|
Hanson, R. K.
|
Kruger, C. H.
- Title
- Ammonia Oxidation in Shock-Heated NH3-N2O-Ar Mixtures.
- Coporate
- Stanford Univ., CA
- Report
-
WSS/CI 83-38,
- Book or Conf
- Combustion Institute/Western States Section. Spring Meeting, 1983. April 11-12, 1983,
Pasadena, CA,
33 p.,
1983
- Keywords
-
ammonia
- Abstract
- Nitrous oxide has been used as a thermal source of O atoms to study ammonia oxidation in the temperature range 1600-2100 K. Concentration time profiles of NH3, N2O, H2O, NO and OH, and relative concentration histories of NH2 were monitored behind incident shock waves using laser based adsorption and emission spectroscopy techniques. A detailed kinetics model has been developed which successfully predicts the experimental recors of the measured species under lean (NH3/N2O:1/3) and rich (NH3/N2O:1/1) conditions. Reactions involving the HNO radical, which is primarily produced through the reaction of O atoms with NH2, provide the major NO producing paths; and the reactions of N and NH2, provide the major NO producing paths; and the reactions of N and NH2 with NO are the important NO removing steps. Under rich conditions, NHi-NHj interactions play a critical role in the fast removal of ammonia and production of N2 through non-NO paths.