Comment on flash photolysis resonance fluorescence investigation of the gas-phase reactions of OH radicals with a series of aliphatic ketones over the temperature range 240-440 K
The recent flash photolysis-resonance fluorescence study of Wallington and Kurylo dealing with the kinetics of the gas-phase reactions of the OH radical with ketones has greatly expanded the literature data base concerning this class of organic compounds. For 2- and 3-pentanone and 2-hexanone the absolute room temperature rate constants determined by Wallington and Kurylo can be compared to rate constants obtained by using a relative rate technique, and significant discrepancies, outside of the combined stated experimental error limits, are evident. The relative rate constant measurements were carried out in a 60-L Teflon chamber, and problems ascribed to first-order wall losses of the ketones during the irradiations were observed.
- Research Organization:
- Univ. of California, Riverside (USA)
- OSTI ID:
- 6332806
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 92:13; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400500* -- Photochemistry
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DATA
DECOMPOSITION
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
FLUIDS
FLUORESCENCE SPECTROSCOPY
GASES
HYDROXYL RADICALS
INFORMATION
KETONES
KINETICS
MEDIUM TEMPERATURE
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RADICALS
REACTION KINETICS
SPECTROSCOPY