The gas-phase reaction of ozone with a series of unsaturated oxygenates and with 1-pentene has been studied at ambient T (287-296 K) and atm. of air. Reaction rate p ฯญ 1 constants, in units of cm 3 molecule ฯช1 s ฯช1 , are for 2 (5H)-furanone, ฯช18 10 0.22 ฯฎ 0.05 for methacrolein, for crotonaldehyde, f
Rate of the reaction between oxygen monofluoride and ozone: Implications for the atmospheric role of fluorine
โ Scribed by A.J. Colussi; M.A. Grela
- Book ID
- 103032497
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 517 KB
- Volume
- 229
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
The upper limit to k,(FO+03-+products) <4.0x lo-l8 cm3/molecule s, derived from a reassessment of the F,-photosensitized decom~sition of OS severely restricts the possibility that stratospheric ozone might be depleted in cycles involving F/FOX radicals. A lower limit to k,fFOz+03-+products) >, SX 10vi6 cm3/molecule s, is also estimated.
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The absolute rate constant of the reaction between NH2 and ozone has been measured using a flash photo&is--laser resonance techmque and found to be 4 = 6.3 (~1.0) X IO-l4 cm3 molecule-' S-I at room temperature. The &hen&s expressIon, determined from measurements in the temperature range 298-380 K IS
The rates of decay of ozone in a large excess of the cycloalkene have been re-measured by an improved experimental procedure, and the following second-order rate constants (cm3 molecule s-l) have been determined in synthetic air at atmospheric pressure: The results are discussed in relation to exis
## Abstract The rate coefficient for the reaction of CCl~3~ radicals with ozone has been measured at 303 ยฑ 2 K. The CCl~3~ radicals were generated by the pulsed laser photolysis of carbon tetrachloride at 193 nm. The time profile of CCl~3~ concentration was monitored with a photoionization mass spe
## Abstract Rate coefficients for the reaction of ozone with a series of unsaturated oxygenated compounds are determined in air at atmospheric pressure and (298ยฑ3) K. Rate data are obtained using both relative and absolute rate techniques, and the measured rate coefficients are found to be in good