The reaction of ammonia with nitrogen dioxide in a flow reactor: Implications for the NH2 + NO2 reaction

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Abstract

The NH3/NO2 system has been investigated experimentally in an isothermal flow reactor in the temperature range 850-1350 X. The experimental data were interpreted in terms of a detailed reaction mechanism. The flow reactor results, supported by a theoretical analysis of the NH2-NO2 complex, suggest that the NH2 + NO2 reaction has two major product channels, both proceeding without activation barriers:(R20) NH2 reversible arrow N2O + H2O(R20) NH2 reversible arrow H2NO + NOOur findings indicate that the N2O + H2O channel is dominant at low temperatures while H2NO + NO dominates at high temperatures. The rate constant for reaction (R21) is estimated to be 3.5 . 10(12) cm(3)/mol-s in the temperature range studied with an uncertainty of a factor of 3.
Original languageEnglish
JournalInternational Journal of Chemical Kinetics
Volume27
Issue number12
Pages (from-to)1207-1220
ISSN0538-8066
DOIs
Publication statusPublished - 1995

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