Shock tube determination of the overall rate of NH2 + NO → products in the thermal De-NOx temperature window

Soonho Song, R. K. Hanson, C. T. Bowman, D. M. Golden

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The rate coefficient of the reaction NH2 + NO → products (R1) was determined in shock tube experiments using frequency-modulation absorption spectroscopy for detection of NH2. Because of the sensitivity of the diagnostic system, very low reactant concentrations could be employed in order to reduce the influence of secondary reactions on the NH2 profiles. Benzylamine, C6H5CH2NH2, was used as a thermal source of the NH2 radicals in the experiments. To determine the reaction rate, a perturbation strategy was employed that is based on changes in the NH2 profiles when NO is added to the C6H5CH2NH2/Ar mixtures. The measured NH2 profiles were interpreted by detailed kinetic modeling to obtain the overall reaction rate of R1 in the temperature range 1262-1726 K. The lower temperature limit of the present study is in the middle of the Thermal De-NOx temperature window. The present rate measurements are consistent with both our previous determination of the rate at higher temperatures and lower temperature data. A rate expression obtained by combining our higher temperature data and lower temperature data is. k1 = 6.83 × 1015 T-1.203 e106/T(K) cm3 mol-1 s-1 for the temperature range 200-2500 K. The estimated uncertainty of the rate coefficient is ±20%.

Original languageEnglish
Pages (from-to)715-721
Number of pages7
JournalInternational Journal of Chemical Kinetics
Volume33
Issue number11
DOIs
Publication statusPublished - 2001 Nov 1

Fingerprint

Shock tubes
shock tubes
Shock
Hot Temperature
Temperature
products
reaction kinetics
profiles
temperature
Reaction rates
coefficients
frequency modulation
low concentrations
absorption spectroscopy
Frequency modulation
perturbation
Absorption spectroscopy
Uncertainty
sensitivity
kinetics

All Science Journal Classification (ASJC) codes

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

Cite this

@article{d6aae90e7317462187e3660f7eb0d1cb,
title = "Shock tube determination of the overall rate of NH2 + NO → products in the thermal De-NOx temperature window",
abstract = "The rate coefficient of the reaction NH2 + NO → products (R1) was determined in shock tube experiments using frequency-modulation absorption spectroscopy for detection of NH2. Because of the sensitivity of the diagnostic system, very low reactant concentrations could be employed in order to reduce the influence of secondary reactions on the NH2 profiles. Benzylamine, C6H5CH2NH2, was used as a thermal source of the NH2 radicals in the experiments. To determine the reaction rate, a perturbation strategy was employed that is based on changes in the NH2 profiles when NO is added to the C6H5CH2NH2/Ar mixtures. The measured NH2 profiles were interpreted by detailed kinetic modeling to obtain the overall reaction rate of R1 in the temperature range 1262-1726 K. The lower temperature limit of the present study is in the middle of the Thermal De-NOx temperature window. The present rate measurements are consistent with both our previous determination of the rate at higher temperatures and lower temperature data. A rate expression obtained by combining our higher temperature data and lower temperature data is. k1 = 6.83 × 1015 T-1.203 e106/T(K) cm3 mol-1 s-1 for the temperature range 200-2500 K. The estimated uncertainty of the rate coefficient is ±20{\%}.",
author = "Soonho Song and Hanson, {R. K.} and Bowman, {C. T.} and Golden, {D. M.}",
year = "2001",
month = "11",
day = "1",
doi = "10.1002/kin.1068",
language = "English",
volume = "33",
pages = "715--721",
journal = "International Journal of Chemical Kinetics",
issn = "0538-8066",
publisher = "John Wiley and Sons Inc.",
number = "11",

}

Shock tube determination of the overall rate of NH2 + NO → products in the thermal De-NOx temperature window. / Song, Soonho; Hanson, R. K.; Bowman, C. T.; Golden, D. M.

In: International Journal of Chemical Kinetics, Vol. 33, No. 11, 01.11.2001, p. 715-721.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Shock tube determination of the overall rate of NH2 + NO → products in the thermal De-NOx temperature window

AU - Song, Soonho

AU - Hanson, R. K.

AU - Bowman, C. T.

AU - Golden, D. M.

PY - 2001/11/1

Y1 - 2001/11/1

N2 - The rate coefficient of the reaction NH2 + NO → products (R1) was determined in shock tube experiments using frequency-modulation absorption spectroscopy for detection of NH2. Because of the sensitivity of the diagnostic system, very low reactant concentrations could be employed in order to reduce the influence of secondary reactions on the NH2 profiles. Benzylamine, C6H5CH2NH2, was used as a thermal source of the NH2 radicals in the experiments. To determine the reaction rate, a perturbation strategy was employed that is based on changes in the NH2 profiles when NO is added to the C6H5CH2NH2/Ar mixtures. The measured NH2 profiles were interpreted by detailed kinetic modeling to obtain the overall reaction rate of R1 in the temperature range 1262-1726 K. The lower temperature limit of the present study is in the middle of the Thermal De-NOx temperature window. The present rate measurements are consistent with both our previous determination of the rate at higher temperatures and lower temperature data. A rate expression obtained by combining our higher temperature data and lower temperature data is. k1 = 6.83 × 1015 T-1.203 e106/T(K) cm3 mol-1 s-1 for the temperature range 200-2500 K. The estimated uncertainty of the rate coefficient is ±20%.

AB - The rate coefficient of the reaction NH2 + NO → products (R1) was determined in shock tube experiments using frequency-modulation absorption spectroscopy for detection of NH2. Because of the sensitivity of the diagnostic system, very low reactant concentrations could be employed in order to reduce the influence of secondary reactions on the NH2 profiles. Benzylamine, C6H5CH2NH2, was used as a thermal source of the NH2 radicals in the experiments. To determine the reaction rate, a perturbation strategy was employed that is based on changes in the NH2 profiles when NO is added to the C6H5CH2NH2/Ar mixtures. The measured NH2 profiles were interpreted by detailed kinetic modeling to obtain the overall reaction rate of R1 in the temperature range 1262-1726 K. The lower temperature limit of the present study is in the middle of the Thermal De-NOx temperature window. The present rate measurements are consistent with both our previous determination of the rate at higher temperatures and lower temperature data. A rate expression obtained by combining our higher temperature data and lower temperature data is. k1 = 6.83 × 1015 T-1.203 e106/T(K) cm3 mol-1 s-1 for the temperature range 200-2500 K. The estimated uncertainty of the rate coefficient is ±20%.

UR - http://www.scopus.com/inward/record.url?scp=0035499119&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035499119&partnerID=8YFLogxK

U2 - 10.1002/kin.1068

DO - 10.1002/kin.1068

M3 - Article

VL - 33

SP - 715

EP - 721

JO - International Journal of Chemical Kinetics

JF - International Journal of Chemical Kinetics

SN - 0538-8066

IS - 11

ER -