Electron spin resonance study of the reaction between oxygen atoms and acetylene
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Transactions of the Faraday Society
- Vol. 65, 2685-2692
- https://doi.org/10.1039/tf9696502685
Abstract
The reaction between O atoms and acetylene at room temperature has been studied by following the variation of the O atom, H atom, and OH radical concentrations with time using gas-phase e.s.r. The results conform with the basic mechanism: O + C2H2→ CH2+ CO (1) O + CH2→ CO + 2H (2) CH2+ C2H2→ C3H4(3) H + C2H2→ C2H2+½H2. (4) The [O] profiles agree with the results of previous investigations but the [H] profiles indicate that the estimates of the overall stoichiometry are too high. The present data give values for k1 of 1.1 ± 0.1 × 108 l mol–1 s–1 and for k2/k3 of 2.6 ± 0.3. OH radicals appear to be produced by the reaction O + CH2→ CH + OH (2a) where k2a/k2= 0.06 ± 0.02, and to decay by the reaction OH + C2H2→ H2O + C2H (5) where a value for k5 may be estimated.Keywords
This publication has 0 references indexed in Scilit: