Shock wave studies in nitrogen + hydrogen systems. Part 4.—Thermal decomposition of ammonia
- 1 January 1967
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Transactions of the Faraday Society
- Vol. 63, 2962-2969
- https://doi.org/10.1039/tf9676302962
Abstract
The decomposition of ammonia has been studied in shock waves over the temperature range 2000–3000°K by following the NH3 concentration using the infra-red emission at 3µ and the NH concentration using the ultra-violet absorption at 3360Å. The ammonia dissociates by the reaction, NH3+Ar→NH2+H+Ar, with a rate constant of 1012.60 exp(–83 kcal/RT) l. mole–1 sec–1 and NH is formed by the sequence, NH2+NH3→N2H3 N2H3→NH+NH2. The first reaction is rate controlling and has an activation energy of ca. 27 kcal/mole.Keywords
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