Shock tube study of monomethylamine thermal decomposition and NH2 high temperature absorption coefficient

M. Votsmeier, S. Song, D. F. Davidson, R. K. Hanson

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

CH3NH2 thermal decomposition is shown to provide a suitable NH2 radical source for spectroscopic and kinetic shock tube studies. Using this precursor, the absorption coefficient of the NH2 radical at a detection wavelength of 16739.90 cm-1 has been determined. In the temperature range 1600-2000 K the low-pressure absorption coefficient is described by the polynominal equation: kNH2 = 3.953×1010/ T3+7.295×105/T2-1.549×103/T[atm-1 cm-1]. The uncertainty of the determined absorption coefficient is estimated to be ±10%. The rate of the thermal decomposition reaction CH3NH2+M→CH3+NH2+M is determined over the temperature range 1550-1900 K and at pressures near 1.6 atm. The rate coefficient was found to be: k1 = 2.51×1016 exp(-28430/T) [cm3 mol-1 s-1]. The uncertainty of the determined rate coefficients is estimated to be ±20%.

Original languageEnglish
Pages (from-to)323-330
Number of pages8
JournalInternational Journal of Chemical Kinetics
Volume31
Issue number5
DOIs
Publication statusPublished - 1999 Jan 1

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Shock tubes
shock tubes
thermal decomposition
Shock
absorptivity
Pyrolysis
Hot Temperature
Temperature
Uncertainty
Pressure
coefficients
Wavelength
Kinetics
low pressure
temperature
kinetics
wavelengths
methylamine

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

Cite this

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abstract = "CH3NH2 thermal decomposition is shown to provide a suitable NH2 radical source for spectroscopic and kinetic shock tube studies. Using this precursor, the absorption coefficient of the NH2 radical at a detection wavelength of 16739.90 cm-1 has been determined. In the temperature range 1600-2000 K the low-pressure absorption coefficient is described by the polynominal equation: kNH2 = 3.953×1010/ T3+7.295×105/T2-1.549×103/T[atm-1 cm-1]. The uncertainty of the determined absorption coefficient is estimated to be ±10{\%}. The rate of the thermal decomposition reaction CH3NH2+M→CH3+NH2+M is determined over the temperature range 1550-1900 K and at pressures near 1.6 atm. The rate coefficient was found to be: k1 = 2.51×1016 exp(-28430/T) [cm3 mol-1 s-1]. The uncertainty of the determined rate coefficients is estimated to be ±20{\%}.",
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Shock tube study of monomethylamine thermal decomposition and NH2 high temperature absorption coefficient. / Votsmeier, M.; Song, S.; Davidson, D. F.; Hanson, R. K.

In: International Journal of Chemical Kinetics, Vol. 31, No. 5, 01.01.1999, p. 323-330.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Votsmeier, M.

AU - Song, S.

AU - Davidson, D. F.

AU - Hanson, R. K.

PY - 1999/1/1

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N2 - CH3NH2 thermal decomposition is shown to provide a suitable NH2 radical source for spectroscopic and kinetic shock tube studies. Using this precursor, the absorption coefficient of the NH2 radical at a detection wavelength of 16739.90 cm-1 has been determined. In the temperature range 1600-2000 K the low-pressure absorption coefficient is described by the polynominal equation: kNH2 = 3.953×1010/ T3+7.295×105/T2-1.549×103/T[atm-1 cm-1]. The uncertainty of the determined absorption coefficient is estimated to be ±10%. The rate of the thermal decomposition reaction CH3NH2+M→CH3+NH2+M is determined over the temperature range 1550-1900 K and at pressures near 1.6 atm. The rate coefficient was found to be: k1 = 2.51×1016 exp(-28430/T) [cm3 mol-1 s-1]. The uncertainty of the determined rate coefficients is estimated to be ±20%.

AB - CH3NH2 thermal decomposition is shown to provide a suitable NH2 radical source for spectroscopic and kinetic shock tube studies. Using this precursor, the absorption coefficient of the NH2 radical at a detection wavelength of 16739.90 cm-1 has been determined. In the temperature range 1600-2000 K the low-pressure absorption coefficient is described by the polynominal equation: kNH2 = 3.953×1010/ T3+7.295×105/T2-1.549×103/T[atm-1 cm-1]. The uncertainty of the determined absorption coefficient is estimated to be ±10%. The rate of the thermal decomposition reaction CH3NH2+M→CH3+NH2+M is determined over the temperature range 1550-1900 K and at pressures near 1.6 atm. The rate coefficient was found to be: k1 = 2.51×1016 exp(-28430/T) [cm3 mol-1 s-1]. The uncertainty of the determined rate coefficients is estimated to be ±20%.

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