By using a relative rate technique, the rate constant for the gas phase reaction of OH radicals with diacetylene, a reaction considered to be of importance in fuel-rich acetylene oxidation, has been determined at 297 :t: 2K and atmospheric pressure. On the basis of a rate constant for the reaction o
Rate constants for the reaction of OH radicals with 2-methyl-2-butene over the temperature range 297–425 K
✍ Scribed by R. Atkinson; R.A. Perry; J.N. Pitts Jr.
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 387 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
Absolute rate constants. k2. for the reaction of OH radicals with 2-methyl-2-butene have been determined over the temperature range 297-425 K usinp P flash photolysis-resonance fluorescence technique. The Arrhenius expression obtained was & = 3.6 X lo-" exp [(450 +-400)/RTJ cm3 moleculeS1 ~8.
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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)
Absolute rate constants have been measured for the reaction of the OH radical with diacetylene over the temperature range of 296-688K using a flash photolysis-resonance fluorescence technique. The best fit to the data is given by the following Arrhenius expression: k= 1.11 x 10 -II exp{410+3OO(cal/m
I%c rate conswnt for methyl rzdic;ll recombination has been measured over the rempcrature range 296-577 K and at pressures bcl\vcrn 5 and 500 Torr win: laser 5~11 photolysis. coupled with absorption spectroscopy at 216.36 nm. Analysis 01' lhC f~ll-ol'f curves gives k, = (1.78 2 0.18) x IO-" rsp( 151