Temperature dependence of the reactions of methylene with oxygen atoms, oxygen, and nitric oxide
Molecular beam sampling and subsequent mass spectrometric analysis have been used as detection techniques for methylene radicals produced in the oxidation process of acetylene with oxygen atoms in a fast flow reactor. Reactions of CH/sub 2/ with oxygen atoms, molecular oxygen, and nitric oxide are investigated in the temperature region between 295 and 600 K. For the reaction, CH/sub 2/ + O, an activation energy of about 0 kcal mol/sup -1/ has been found while for the reaction, CH/sub 2/ + O/sub 2/, the value E/sub 3/ = 1.5 +- 0.3 kcal mol/sup -1/ is derived. The reaction CH/sub 2/ + NO, shows non-Arrhenius behavior and has a negative activation energy, E/sub 4/ = -1.1 +- 0.4 kcal mol/sup -1/. In addition, complete Arrhenius expressions for the rate constants of reactions CH/sub 2/ + O/sub 2/ and CH/sub 2/ + NO are given, and an attempt is made to determine the possible reaction products of these reactions.
- Research Organization:
- Katholieke Universiteit, Leuven, Belgium
- OSTI ID:
- 5738262
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 83:16; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201 -- Chemical & Physicochemical Properties
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ACETYLENE
ALKYNES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CRYOGENIC FLUIDS
DATA
DATA FORMS
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
HYDROCARBONS
INFORMATION
ISOLATED VALUES
KINETICS
METHYLENE RADICALS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
RADICALS
REACTION KINETICS
TEMPERATURE EFFECTS