Liquid-phase autoxidation of organic compounds at elevated temperatures. Absolute rate constant for intermolecular hydrogen abstraction in hexadecane autoxidation at 120–190°C
✍ Scribed by R. K. Jensen; S. Korcek; M. Zinbo
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 434 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0538-8066
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✦ Synopsis
The absolute rate constants for the intermolecular hydrogen abstraction reactions of secondary hydrogens by secondary alkylperoxy radicals in hexadecane autoxidation, k 3 , have been determined in the temperature range of 120-190°C using the stirred flow reactor technique. Absolute rate constants determined in this study for hexadecane are in good agreement with those determined for other hydrocarbons in liquid phase, on a per hydrogen basis, a t lower temperatures. Arrhenius parameters for k3/H derived from this study are A = 108.6 M-ls-l and E, = 16.0 kcal/mol. The values of these parameters provide experimental confirmation for previous estimates made from both lower temperature reactions in the liquid phase and higher temperature reactions in the gas phase.