## ~~ ~ Rate constants for the gas-phase reactions of O(3P) atom with a series of rnonoterpenes have been determined at ambient temperature (ca. 302-309 K ) and atmospheric pressure using a relative rate technique Using the literature rate constants for O(3P) + isobutene, cis and trans-2-butene, 3
Rate coefficients for the reactions of O(3P) with selected biogenic Hydrocarbons
โ Scribed by Suzanne E. Paulson; John J. Orlando; Geoffrey S. Tyndall; Jack G. Calvert
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 710 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0538-8066
No coin nor oath required. For personal study only.
โฆ Synopsis
The rate coefficients for the reaction of O(3P) with the biogenic hydrocarbons A3-carene, a-pinene, and isoprene have been measured using a direct method for the first time. O(3P) was generated from the pulsed photolysis of NO2 or 0 3 a t 308 nm, and measured by resonance fluorescence at 131 nm. Rate coefficients at room temperature for the biogenics are similar: (3.4 -+ 0.6) X and (3.5 2 0.6) X lo-'' cm3 molec-' s-', for A3-carene, a-pinene, and isoprene, respectively. The rate coefficients for the reaction of O(3P) with NO2 and ethene were also measured with the same method, and these values are within 4% and 10% of the currently recommended values, respectively. The correlation between OH and 0(3P)-alkene reaction rate coefficients is updated and discussed.
๐ SIMILAR VOLUMES
The kinetics of the reactions O( 3 P) ฯฉ CF 2 "CCl 2 and O( 3 P) ฯฉ CF 3 CF "CF 2 were studied at room temperature in a discharge flow tube system. The overall rate constants based on the measured afterglow reactions were (3.10 ฯฎ 0.40) ฯซ 10 ฯช13 and (3.00 ฯฎ 0.60) ฯซ 10 ฯช14 cm 3 molecule ฯช1 s ฯช1 , respec
The absolute second-order rate coefficient for the reaction, O(3P) + CH300H + products, was measured to be ki = (1.06 ? 0.26) x cm3 molec-' s-l at 297 K, where the quoted error is 2 a including precision and estimated systematic errors. The possible presence of (CH3CHp),0 in our sample of CH,OOH lea
Theoretical rate constants have been calculated for O(3P) with five saturated hydrocarbons, CH4, CzHs, C3H8, ~so-C~HIO, and neo-CsH12. The method of choice is bond energy-bond order (BEBO) with activated complex theory (ACT). Because the BEBO method is empirical, O(3P) + CH4 is evaluated first, and
## Abstract Using a relative kinetic technique, rate coefficients have been determined at (298 ยฑ 2) K and atmospheric pressure for the gasโphase reactions of the NO~3~ radical with three vicinal dihydroxy aromatic compounds. The experiments were carried out in a 1080โl quartz glass reactor at the B
## Abstract A flow tube method has been used to determine rate constants for the elementary reactions: equation image Oxygen atoms were produced by adding a small excess of NO to a stream of partially dissociated nitrogen, and their reaction with hydrogen halide was monitored by observing the int