Shock tube study of monomethylamine thermal decomposition and NH2 high temperature absorption coefficient
✍ Scribed by M. Votsmeier; S. Song; D. F. Davidson; R. K. Hanson
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 155 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0538-8066
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✦ Synopsis
CH 3 NH 2 thermal decomposition is shown to provide a suitable NH 2 radical source for spectroscopic and kinetic shock tube studies. Using this precursor, the absorption coefficient of the NH 2 radical at a detection wavelength of 16739.90 cm Ϫ1 has been determined. In the temperature range 1600-2000K the low-pressure absorption coefficient is described by the polynominal equation: k NH2 ϭ 3.953 ϫ 10 10 /T 3 ϩ 7.295 ϫ 10 5 /T 2 Ϫ 1.549 ϫ 10 3 /T [atm Ϫ1 cm Ϫ1 ] The uncertainty of the determined absorption coefficient is estimated to be Ϯ10%. The rate of the thermal decomposition reaction
is determined over the temperature range 1550-1900 K and at pressures near 1.6 atm. The rate coefficient was found to be:
The uncertainty of the determined rate coefficients is estimated to be Ϯ20%.