A modified laser photolysis/laser-induced fluorescence technique has been used to measure atmospheric pressure absolute rate coefficients for the reaction of hydroxyl (OH) radicals with the chlorinated methanes (CH,CI, CH2C12, and CHCI,). Data have been obtained for these compounds over the widest t
A flash photolysis study of the rate of the reaction OH + CH4 → CH3 + H2O over an extended temperature range
✍ Scribed by Reinhard Zellner; Wolfram Steinert
- Publisher
- John Wiley and Sons
- Year
- 1976
- Tongue
- English
- Weight
- 643 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0538-8066
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✦ Synopsis
A flash photolysis system has been used to study the rate of reaction ( l ) , OH + CHI ---f
The temperature It is found that the Arrhenius plot of kl is strongly CHI + H20, using time-resolved resonance absorption to monitor OH.
was varied between 300 and 900°K. curved and k, ( T ) can best be represented by the expression kl = 103.54 * 0.08 T3.08 exp (-1010/T) cm3/mole.sec.
The apparent Arrhenius activation energy changes from 1511 kJ/mole at 300°K to 32*2 kJ/mole at 1000°K. On either side of our temperature range, both absolute rates and their temperature dependence are in good agreement with the results from most previous investigations.
📜 SIMILAR VOLUMES
Rate constants for the reaction of OH radicals vlith COS. CSz and CII~SCHJ, which are invo!ved in the glohal sulfur cycle, iI;IVC been determined over the temperature range 299-430 K uGng a flash ps hotolysis-resonance fluorcsccnu: tcchmque. For COS and CS2 upper limits at room tcmyzraturc of k(COS)
On the pownGa1 surface Ior the Me process. eleven slationary points (UHF. 3-21G) have been localed: six minima. three saddle points and two stationary poims of higher order. The most s[able C,H: syskzm has a linear C-H-H-C bond.