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High-temperature photochemistry kinetics study of the reaction H + NO2 yields OH + NO from 296 to 760 k. (Reannouncement with new availability information)

Technical Report ·
OSTI ID:91414
Rate coefficients for the H + NO2 yields OH + NO reaction have been measured by using the high-temperature photochemistry (HTP) technique. H atoms are generated by flash photolysis of CH4, and their relative concentration is monitored by time-resolved resonance-fluorescence detection. The data are well-fitted by the empirical expression k(T) = 2.2 X 10-10 exp(-182 K/T) cm3/molecule for the 296-760 K temperature range. The precision of the data is 7%, and the accuracy is estimated to be 21%, where both figures represent statistical confidence intervals. Comparison of the ratio of the experimental reaction cross sections, at the temperature extremes, to the theoretical ratio supports a zero energy barrier. The potential stabilization channel leading to HONO is discussed.
Research Organization:
Rensselaer Polytechnic Inst., Troy, NY (United States)
OSTI ID:
91414
Report Number(s):
AD-A--238199/4/XAB; CNN: Contract DAAL03-87-K-0021
Country of Publication:
United States
Language:
English