Rate coefficients for the O(3P) + Cl2O gas-phase reaction between 230 and 357 K
✍ Scribed by Dimitrios K. Papanastasiou; James B. Burkholder
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 241 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0538-8066
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✦ Synopsis
Abstract
Rate coefficients, k, for the gas‐phase reaction of O(^3^P) atoms with Cl~2~O (dichlorine monoxide) over a range of temperatures (230–357 K) at pressures between 12 and 32 Torr (N~2~) are reported. Rate coefficients were measured under pseudo‐first‐order conditions in O(^3^P) using pulsed laser photolysis to produce O(^3^P) atoms and atomic resonance fluorescence to detect its temporal profile. The rate coefficient temperature dependence is given by the Arrhenius expression k(T) = (1.51 ± 0.20) × 10^−11^ exp[−(477 ± 30)/T] cm^3^ molecule^−1^ s^−1^, and k(296 K) was measured to be (2.93 ± 0.30) × 10^−12^ cm^3^ molecule^−1^ s^−1^. The quoted uncertainty limits are at the 2σ (95% confidence) level and include estimated systematic errors. The rate coefficients determined in the present study, under conditions that minimized secondary losses of O(^3^P), are compared with previous results from other laboratories and the discrepancies are discussed. © 2011 Wiley Peiodicals, Inc.*This article is a U.S. Government work and, as such, is in the public domain of the United States of America.
Int J Chem Kinet 43: 312–321, 2011
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