✦ LIBER ✦

The mechanism of O(3P) atom reaction with ethylene and other simple olefins

✍ Scribed by V. D. Knyazev; V. S. Arutyunov; V. I. Vedeneev

Publisher: John Wiley and Sons
Year: 1992
Tongue: English
Weight: 1000 KB
Volume: 24
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550240605

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✦ Synopsis

Reactions of oxygen atoms with ethylene, propene, and 2-butene were studied at room temperature under discharge flow conditions by resonance fluorescence spectroscopy of 0 and H atoms at pressures of 0.08 to 12 torr. The measured total rate constants of these reactions are

em3 5-l. The branching ratios of H atom elimination channels were measured for reactions of 0 atoms with ethylene and propene. No H-atom elimination was found for the reaction of 0-atoms with 2-butene. A redistribution of reaction 0 + CzH4 channels with pressure was found. A mechanism of the 0 + CzH4 reaction was proposed and the possibility of its application to other olefins is discussed. On the basis of mechanism the pressure dependence of the total rate constant for reaction 0 + CzH4 was predicted and experimentally confirmed in the pressure range 0.08-1.46 torr.

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