ISSN:
0538-8066
Schlagwort(e):
Chemistry
;
Physical Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
The high temperature kinetics of NH in the pyrolysis of isocyanic acid (HNCO) have been studied in reflected shock wave experiments. Time histories of the NH(X3Σ-) radical were measured using a cw, narrow-linewidth laser absorption diagnostic at 336 nm. The second-order rate coefficients of the reactions: were determined to be: \documentclass{article}\pagestyle{empty}\begin{document}$$k_{1{\rm a}} = 9.84\,\, \times \,\,10^{15} \,\,\exp (- 43000/T,{\rm K})\,\,\,\,\,\,(f = 0.65,F = 1.50)\,\,\,\,\,\,T = 1830 - 3340\,\,{\rm K,}$$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$k_{\rm 2} = 5.1\,\, \times \,\,10^{13} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,(f = 0.7,F = 1.3)\,\,\,\,\,\,T = 2070 - 2730\,\,{\rm K,}$$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$k_{\rm 3} = 2.65\,\, \times \,\,10^{14} \,\,\,\exp (- 38000/T,{\rm K})\,\,\,\,\,\,(f = 0.5,F = 1.4)\,\,\,\,\,\,T = 3140 - 3320\,\,{\rm K,}$$\end{document} cm3-mol-1-s-1, where f and F define the lower and upper uncertainty limits, respectively. The data for k1a are somewhat better fit by: \documentclass{article}\pagestyle{empty}\begin{document}$$k_{{\rm 1a}} = 3.26\,\, \times \,\,10^{35} T^{ - 5.11} \,\,\exp (- 55300/T,{\rm K})\,\,\,{\rm cm}^{\rm 3} {\rm - mol}^{{\rm - 1}} {\rm - s}^{{\rm - 1}} .$$\end{document}
Zusätzliches Material:
12 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/kin.550211107
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