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A temperature dependence kinetics study of the reactions of Cl/2-P-3/2/ with O3, CH4, and H2O2The temperature dependence of two chlorine atom reactions of considerable fundamental importance to stratospheric chemistry was studied using the technique of flash photolysis-resonance fluorescence. The reactions of interest were: (1) Cl + O3 yields ClO + O2 studied at 220-350 K, and (2) Cl + CH4 yields CH3 + HCl studied at 218-401 K. In addition, the reaction Cl + H2O2 yields HCl + HO2 was studied at 300 K. The corresponding rate constants are provided for the three reactions. The new rate data implies the need to revise downward by a factor of 2.4-3 the magnitude of the ozone perturbation due to the presence of ClO/x/ species in the stratosphere, predicted by earlier model calculations.
Document ID
19760062744
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Watson, R. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena, Calif.; Georgia Institute of Technology, Atlanta Ga., United States)
Machado, G. (Georgia Inst. of Tech. Atlanta, GA, United States)
Fischer, S. (Georgia Inst. of Tech. Atlanta, GA, United States)
Davis, D. D. (Georgia Institute of Technology Atlanta, Ga., United States)
Date Acquired
August 8, 2013
Publication Date
September 15, 1976
Publication Information
Publication: Journal of Chemical Physics
Volume: 65
Subject Category
INORGANIC AND PHYSICAL CHEMISTRY
Distribution Limits
Public
Copyright
Other