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Upper limit on the rate constant for isotope exchange between molecular oxygen and ozone at 298 KThe gas phase bimolecular isotope exchange reaction between molecular oxygen and ozone has been investigated directly for the first time. Its rate coefficient is found to be less than 2 x 10 to the -25th cu cm/sec at 298 K, over six orders of magnitude below recent estimates. Much faster exchange was observed over condensed ozone at 77 K, suggesting isotopic scrambling is catalyzed under these conditions. The low rate coefficient implies that homogeneous exchange between ground state oxygen and ozone molecules cannot play a significant role in heavy ozone chemistry.
Document ID
19880035946
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Anderson, S. M.
(Aerodyne Research, Inc. Billerica, MA, United States)
Morton, J.
(Aerodyne Research, Inc. Billerica, MA, United States)
Mauersberger, K.
(Minnesota, University Minneapolis, United States)
Date Acquired
August 13, 2013
Publication Date
December 1, 1987
Publication Information
Publication: Geophysical Research Letters
Volume: 14
ISSN: 0094-8276
Subject Category
Inorganic And Physical Chemistry
Accession Number
88A23173
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-80-0207
CONTRACT_GRANT: DAAG29-81-K-0050
Distribution Limits
Public
Copyright
Other

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