The kinetics of the gas-phase reactions of OH radicals, NO 3 radicals, and O 3 with indan, indene, fluorene, and 9,10-dihydroanthracene have been studied at 297 ฯฎ 2 K and atmospheric pressure of air. The rate constants, or upper limits thereof, for the O 3 reactions were (in cm 3 molecule ฯช1 s ฯช1 un
Kinetics of the gas-phase reactions of NO3 radicals and O3 with 3-methylfuran and the OH radical yield from the O3 reaction
โ Scribed by Alvaro Alvarado; Roger Atkinson; Janet Arey
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 386 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0538-8066
No coin nor oath required. For personal study only.
โฆ Synopsis
Using relative rate methods, rate constants have been measured for the gas-phase reactions of 3-methylfuran with NO, radicals and 0, at 296 ? 2 K and atmospheric pressure of air. The rate constants determined were (1.31 ? 0.46) X lo-'' cm' molecule-' s-' for the NO, radical reaction and (2.05 ? 0.52) X cm3 molecule-' S S ' for the 0, reaction, where the indicated errors include the estimated overall uncertainties in the rate constants for the reference reactions Based on the cyclohexanone plus cyclohexanol yield in the presence of sufficient cyclohexane to scavenge >95% of OH radicals formed, it is estimated that the 0, reaction leads to the formation of OH radicals with a yield of 0 59, uncertain to a factor of ca I 5 In the troposphere, 3-methylfuran will react dominantly with the OH radical during daylight hours, and with the NO, radical during nighttime hours for nighttime NO, radical concentrations > lo7 molecule m S 3 .
๐ SIMILAR VOLUMES
The gas-phase reaction of NO 3 radicals with isoprene was investigated under flow conditions at 298 K in the pressure range 6.8 ฯฝ P(mbar) ฯฝ 100 using GC-MS/FID, direct MS, and long-path FT-IR spectroscopy as detection techniques. By means of a relative rate method, the rate constant for the primary
By using relative rate methods, rate constants for the gas-phase reactions of OH and NO 3 radicals with propanal, butanal, pentanal, and hexanal have been measured at 296 ฯฎ 2 K and atmospheric pressure of air. By using methyl vinyl ketone as the reference compound, the rate constants obtained for th
CF 3 CF 2 CH 2 OH is a new chlorofluorocarbon (CFC) alternative. However, there are few data about its atmospheric fate. The kinetics of its atmospheric oxidation, the OH radical reaction of CF 3 CF 2 CH 2 OH, has been investigated in a 2-liter Pyrex reactor in the temperature range of 298 ฯณ 356 K u
Using a relative rate method, rate constants for the gas-phase reactions of 2methyl-3-buten-2-ol (MBO) with OH radicals, ozone, NO 3 radicals, and Cl atoms have been investigated using FTIR. The measured values for MBO at and total 298 ฯฎ 2 K 740 ฯฎ 5 torr pressure are: ฯช11 3 ฯช1 ฯช1 ฯช18 3 k ฯญ (3.9 ฯฎ 1.