A pyrolysis mechanism for ammonia
Tóm tắt
The mechanism of NH3 pyrolysis was investigated over a wide range of conditions behind reflected shock waves. Quantitative time‐history measurements of the species NH and NH2 were made using narrow‐linewidth laser absorption. These records were used to establish an improved model mechanism for ammonia pyrolysis. The risetime and peak concentrations of NH and NH2 in this experimental database have also been summarized graphically.
Rate coefficients for several reactions which influence the NH and NH2 profiles were fitted in the temperature range 2200 K to 2800 K. The reaction and the corresponding best fit rate coefficients are as follows:
The experimental data from four earlier measurements of the dissociation reaction
Từ khóa
Tài liệu tham khảo
T. R.Roose Ph.D. Thesis Stanford University 1981.
K.HolzrichterandH. Gg.Wagner 18th Symp. (Int.) on Combustion The Combustion Institute Pittsburgh 1981.
J. A.MillerandC. T.Bowman Progress Energy Combust. Sci. in press (1988).
T. R.Roose R. K.Hanson andC. H.Kruger 11th Intl. Symposium on Shock Tubes and Waves University Washington 245 (1977).
P.Dransfeld W.Hack H.Kurzke F.Temps andH. Gg.Wagner 20th Symp. (Int.) on Combustion The Combustion Institute Pittsburgh 1984.
N.Fujii H.Miyama M.Koshi andT.Asaba 18th Symp. (Int.) on Combustion The Combustion Institute Pittsburgh 1981.
M.YumuraandT.Asaba 14th Intl. Symposium on Shock Tube and Waves Sydney 1983.
D. F.DavidsonandR. K.Hanson Int. J. Chem. Kinet. in press 1990.
R. J.Kee J. A.Miller andT. H.Jefferson CHEMKIN; A General Purpose Problem Independent Transportable Fortran Chemical Kinetics Code Package Sandia National Lab. Report No. SAND80‐8003 1980.
A. E.Lutz R. J.Kee andJ. A.Miller SENKIN; A Fortran Program for Predicting Homogeneous Gas Phase Chemical Kinetics with Sensitivity Analysis Sand 87‐8248 Sandia Nat. Lab. Livermore 1988.
R. J.Kee F. M.Rupley andJ. A.Miller The CHEMKIN Thermodynamic Database Sandia Nat. Lab. Report No. SAND87‐8215 1987.
Hanson R. K., 1985, Combustion Chemistry
Bahn G. S., 1968, Reaction Rate Compilation for H‐O‐N System
A. M.Dean J. E.Hardy andR. K.Lyon 19th Symp. (Int.) on Combustion The Combustion Institute Pittsburgh 1982.