Accession Number:

AD0283044

Title:

KINETICS OF RECOMBINATION OF ATOMIC OXYGEN AT ROOM TEMPERATURE

Descriptive Note:

Corporate Author:

AEROJET-GENERAL CORP AZUSA CALIF

Personal Author(s):

Report Date:

1960-11-01

Pagination or Media Count:

1.0

Abstract:

OXYGEN WAS PARTLY DISSOCIATED BY A MICROWAVE DISCHARGE IN STATIC EXPERIMENTS, AND THE ABSOLUTE CONCENTRATION OF ATOMS WAS DETERMINED WITH A Wrede gage. The rate of recombination was measured by observing the radiation emitted as a result of the reaction of O atoms with a trace of NO2. An upper limit of 2.5 x 10 to the 14th power cc sq.mole sq. sec was established for the rate constant at 350 K of the reaction O O O2 yields O2 O2. Since this upper limit is 13 to 12 times the value found in shocktube experiments for the same rate constant at 3500 K, it is concluded that the rate constant increases slowly with temperature instead of varying as an inverse power of absolute temperature, as has conventionally been assumed. In the same experiments, the rate constant for the reaction O O2 O2 yields O3 O2 was found to be 1.1 x 10 to the 14th power cc sq.mole sq. sec at 350 K, in excellent agreement with other recent determinations. Recombination was strongly catalyzed by OH radicals in accordance with the mechanism O OH O2 yields HO2 O2 and O HO2 yields OH O2. The rates of these reactions are reported. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE