Electron spin resonance studies of gas-phase oxidation reactions. The hydrogen-oxygen system at atmospheric pressure
Identifieur interne : 002D95 ( Main/Merge ); précédent : 002D94; suivant : 002D96Electron spin resonance studies of gas-phase oxidation reactions. The hydrogen-oxygen system at atmospheric pressure
Auteurs : Akiss Agkpo [France] ; Louis-René Sochet [France]Source :
- Combustion and Flame [ 0010-2180 ] ; 1974.
English descriptors
- Teeft :
- Active centers, Atmospheric pressure, Bimolecular reaction, Cold finger, Combustion institute, Computer treatment, Contact time, Contact times, Good agreement, Hydrogen peroxide, Induction period, Kinetic analysis, Kinetic study, Liquid nitrogen, Matrix, Matrix material, Maximum concentration, Maximum concentrations, Maximum rate, Molecular products, Molecular species, Other radicals, Oxygen consumption, Peroxide, Preexponential factors, Radical concentrations, Rate constants, Reactant, Reaction vessel, Same conditions, Silica vessel, Similar results, Static system, Surface coating, Third limit, Total flow, Untreated vessels.
Abstract
An apparatus is described in which radicals can be identified by ESR and molecular products by polarography or gas chromatography. The radicals are removed from the reaction mixture through a micro-leak and condensed in a matrix on a cold finger. From a study of the system, 1 H2 (1 D2) - 1 O2 - 4 N2 at 546°C and a pressure of 1 atm, in reactors with and without a B2O3 coating, evidence has have been produced for the presence of HO−2 and DO−2 radicals. Following the earlier suggestion that the formation of H2O2 occurs by bimolecular reaction of HO−2, a mechanism is studied and compared with the experimental results.
Url:
DOI: 10.1016/S0010-2180(74)80026-X
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ISTEX:E2B98115A90323BEF537D4B5F1D44AE75C2449FDLe document en format XML
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<term>Bimolecular reaction</term>
<term>Cold finger</term>
<term>Combustion institute</term>
<term>Computer treatment</term>
<term>Contact time</term>
<term>Contact times</term>
<term>Good agreement</term>
<term>Hydrogen peroxide</term>
<term>Induction period</term>
<term>Kinetic analysis</term>
<term>Kinetic study</term>
<term>Liquid nitrogen</term>
<term>Matrix</term>
<term>Matrix material</term>
<term>Maximum concentration</term>
<term>Maximum concentrations</term>
<term>Maximum rate</term>
<term>Molecular products</term>
<term>Molecular species</term>
<term>Other radicals</term>
<term>Oxygen consumption</term>
<term>Peroxide</term>
<term>Preexponential factors</term>
<term>Radical concentrations</term>
<term>Rate constants</term>
<term>Reactant</term>
<term>Reaction vessel</term>
<term>Same conditions</term>
<term>Silica vessel</term>
<term>Similar results</term>
<term>Static system</term>
<term>Surface coating</term>
<term>Third limit</term>
<term>Total flow</term>
<term>Untreated vessels</term>
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<front><div type="abstract" xml:lang="en">An apparatus is described in which radicals can be identified by ESR and molecular products by polarography or gas chromatography. The radicals are removed from the reaction mixture through a micro-leak and condensed in a matrix on a cold finger. From a study of the system, 1 H2 (1 D2) - 1 O2 - 4 N2 at 546°C and a pressure of 1 atm, in reactors with and without a B2O3 coating, evidence has have been produced for the presence of HO−2 and DO−2 radicals. Following the earlier suggestion that the formation of H2O2 occurs by bimolecular reaction of HO−2, a mechanism is studied and compared with the experimental results.</div>
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