The H+NO recombination reaction over a wide temperature range

✍ Scribed by Patrick S. Riley; Biljana Cosic; Arthurxy Fontijn

• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 106 KB
• Volume: 35
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.10137

✦ Synopsis

Abstract

Rate coefficients of the title reaction have been measured in a high‐temperature photochemistry (HTP) reactor using Ar as the bath gas. H atoms were generated by flash photolysis of NH~3~ and their relative concentrations were monitored by resonance fluorescence. The data are best fitted by k(295–905 K) = 6.5 × 10^−34^ (T/K)^0.206^ exp(780K T) cm^6^ molecule^−2^ s^−1^, with ±2σ precision values varying from 16 to 36% and corresponding suggested accuracy levels of 29–42%. Using a literature value for the relative collision efficiencies of N~2~ and Ar indicates that for N~2~ as the third body the above rate coefficient expression should be multiplied by 1.6. This leads to good agreement with two recent near 1000 K measurements. © 2003 Wiley Periodicals, Inc. Int J Chem Kinet 35: 374–380, 2003