The rate constant for the reaction NHa + OH + NH= + Hz0 was determined by the comparison of the calculated induo tion period data with experiments by the shock tube technique in the range 1360-1840 K, for NHs-Ha-02-\_Ar mixtures\_ The rate constants can be represented by the expression k = 1012-4g'o
Rate constants for the reactions of OH with NH3 and HNO3
โ Scribed by Reinhard Zellner; Ian W.M. Smith
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 273 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
โฆ Synopsis
The rate constant of the reaction, OH + NH3 -+ Hz0 + NH2, has been measured at temperatures between 230 and 490'K using time-resolved resonance absorption to observe the concemytion of OH radicals..An Arrhenius expression, kI = 2.3 X lO_" exp(-1.6 kcai mole-'/RT) cm3 molecule-' set , was obtained. Similar experiments, between 240 and 405ยฐK. have teen carried out on OH + HNO 3 -, Hz0 + N03, and k3 = (0.9 -+ 0.2) x IO-l3 cm3 molecule-' set+ throughout this range of temperature.
๐ SIMILAR VOLUMES
## Abstract The reaction mechanism of CF~3~CH~2~OH with OH is investigated theoretically and the rate constants are calculated by direct dynamics method. The potential energy surface (PES) information, which is necessary for dynamics calculation, is obtained at the B3LYP/6โ311G (d, p) level. The si
Rate constants for the reactions of 0, and OH radicals with acetylene, propyne, and 1-butyne have been determined at room temperature. The rate constants obtained a t 294 i 2 K for the reactions of 0, with acetylene, propyne, and 1-butyne were (7.8 -c 1.2) x lo-'' cm3/molecule . s, (1.43 2 0.15) x l
Low pressure (4.67 kPa) CiI,/02/Ar flames were seeaed with approximately 5300 ppm NH,. The concentration profiles of stable and radical species in lean (6 = 0.92) and rich (r#~ = 1.13) flames were determined by molecular beam sampling mass spectrometry. Temperature profiles in these flames were meas
Rate constants have ba:en determined for the reaction OH + NO\* (+ N2) + HNOz (+ N2), using time-resolved resonance absorption to follow the removal of OH radicals produced by flash photolysis of HN03. 'Ike measurements cover the ranges: 220 C T 4 3.58 K and 3.2 X IO" 4 [Nz] G 4.0 X IO" molecule cme