NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Pressure and temperature dependence of the reaction NO2 + NO3 + M yields N2O5 + MThe pressure and temperature dependences of the reaction NO2 + NO3 + M which yields N2O5 + M are investigated by using the flash photolysis/visible absorption technique in which the pseudo-first-order decay of NO3 is monitored as a function of total pressure (20-700 torr), diluent gas (M = He and N2), and temperature (236-358 K). The reaction is found to be in the falloff region in the 20-700 torr pressure range with collision efficiencies increasing in the order He less than N2. Falloff parameters are obtained by fitting the experimental data to the falloff equation of Troe and co-workers. The expression for k1(N2 concentration, T) is obtained and compared with the evaluations presented in the NASA (DeMore, 1983) and CODATA (Baulch et al., 1982) reviews of kinetic data for atmospheric chemistry. Both evaluations are based on N2O5 thermal decomposition data coupled with estimates of the equilibrium constant. The significance of the reactions for atmospheric chemistry rests not only on their rates but on the extent to which they result in a permanent sink for NOX.
Document ID
19850039381
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kircher, C. C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Margitan, J. J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Sander, S. P.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1984
Publication Information
Publication: Journal of Physical Chemistry
Volume: 88
Issue: 19, 1
ISSN: 0022-3654
Subject Category
Inorganic And Physical Chemistry
Accession Number
85A21532
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available