The unimolecular decomposition of 3,4dihydro-2H-pyran was investigated behind reflected shock waves by monitoring infrared absorption at 9.44 pm. The decomposition proceeded via a direct molecular process to ethylene and acrolein. The Arrhenius expression for the decomposition rate constant, k= IO"-
The pyrolysis of 2-, 3-, and 4-methylbenzyl radicals behind shock waves
β Scribed by Ravi X. Fernandes; Andreas Gebert; Horst Hippler
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 178 KB
- Volume
- 29
- Category
- Article
- ISSN
- 1540-7489
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Highly dilute mixtures of 1,3-butadiene and 1,3-butadiene-1,1,4,4-d4 were pyrolyzed behind reflected and incident shock waves, respectively. Concentrations of H and D atoms were measured by resonance absorption spectroscopy. In the early stages of the reaction, nearly equal amounts of H and D were f
## Abstract 2,4βDimethylhexeneβl has been decomposed in singleβpulse shock tube experiments. Rate expressions for the initial reactions are and sec^β1^ at 1.5β5 atm and 1050Β°K. This leads to Ξ__H__^Β°^~f300~ (CH~2~ = C(CH~3~)CH~2~) = 124 kJ/mol, or an allylic resonance energy of 50 kJ/mol. Rate