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Reaction of N2O5 with H2O on carbonaceous surfacesThe heterogeneous reaction of N2O5 with commercially available ground charcoal in the absence of H2O revealed a physisorption process (gamma = 0.003), together with a redox reaction generating mostly NO. Slow HNO3 formation was the result of the interaction of N2O5 with H2O that was still adsorbed after prolonged pumping at 0.0001 torr. In the presence of H2O, the same processes with gamma = 0.005 are observed. The redox reaction dominates in the early stages of the reaction, whereas the hydrolysis gains importance later at the expense of the redox reaction. The rate law for HNO3 generation was found to be d(HNO3)/dt = k(bi)(H2O)(N2O5) with k(bi), the effective bimolecular rate constants, for 10 mg of carbon being (1.6 + or - 0.3) x 10 to the -13th cu cm/s.
Document ID
19870036161
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Brouwer, L. (SRI International Corp. Menlo Park, CA, United States)
Rossi, M. J. (SRI International Corp. Menlo Park, CA, United States)
Golden, D. M. (SRI International Menlo Park, CA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1986
Publication Information
Publication: Journal of Physical Chemistry
Volume: 90
Issue: 19 1
ISSN: 0022-3654
Subject Category
INORGANIC AND PHYSICAL CHEMISTRY
Funding Number(s)
CONTRACT_GRANT: DE-AC03-78EV-10121
CONTRACT_GRANT: NASW-3888
Distribution Limits
Public
Copyright
Other