The formation and consumption of CH radicals during shock-induced pyrolysis of a few ppm ethane diluted in argon was measured by a ring-dye laser spectrometer Absorption-overtime profiles, measured at a resonance line in the Q-branch of the A2A -X211 band of C H at A = 431.1311 nm. were recorded and
A shock tube study of the CH2O + NO2 reaction at high temperatures
β Scribed by Chin-Yu Lin; Hung-Tai Wang; M. C. Lin; C. F. Melius
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 867 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0538-8066
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
The reaction of CH~2~O with NO~2~ has been studied with a shock tube equipped with two stabilized ew CO lasers. The production of CO, NO, and H~2~O has been monitored with the CO lasers in the temperature range of 1140β1650 K using three different Arβdiluted CH~2~OβNO~2~ mixtures. Kinetic modeling and sensitivity analysis of the observed CO, NO, and H~2~O production profiles over the entire range of reaction conditions employed indicate that the bimolecular metathetical reaction, NO~2~ + CH~2~O β HONO + CHO (1) affects most strongly the yields of these products. Combination of the kinetically modeled values of π~1~ with those obtained recently from a low temperature pyrolytic study, ref. [8], leads to
for the broad temperature range of 300β2000 K.
π SIMILAR VOLUMES
The high-temperature reaction of NO with H 2 has been studied behind reflected shock waves in the temperature range of 1760-2160 K at total pressures of 1.4 to 2.0 bar by monitoring the time-dependent H-atom concentrations in the postshock reaction zone using atomic resonance absorption spectroscopy
The rate coefficient for the reaction (1) OH + OH --\* HzO + 0 has been determined in mixtures of nitric acid (HNO3) and argon in incident shock wave experiments. Quantitative OH time-histories were obtained by cw narrow-linewidth uv laser absorption of the Rl(5) line of the A2 x+ + X 2 ni (0,O) tra
## Abstract The reaction of hydroxyl [OH] radicals with formaldehyde [CH~2~O] was studied at temperatures ranging from 934 K to 1670 K behind reflected shock waves at an average total pressure of 1.6 atm. OH radicals were produced by shockβheating tertβbutyl hydroperoxide [(CH~3~)~3~ο£ΏCOο£ΏOH], while
NO 2 concentration profiles in shock-heated NO 2 /Ar mixtures were measured in the temperature range of 1350 -2100 K and pressures up to 380 atm using Ar Ο© laser absorption at 472.7 nm, IR emission at , and visible emission at 300 -600 nm. In the course of this study, the absorption coefficient of N
## Abstract The reaction between methyl and hydroxyl radicals has been studied in reflected shock wave experiments using narrowβlinewidth OH laser absorption. OH radicals were generated by the rapid thermal decomposition of tertβbutyl hydroperoxide. Two different species were used as CH~3~ radical