ISSN:
0538-8066
Keywords:
Chemistry
;
Physical Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The reaction of atomic hydrogen with isocyanic acid (HNCO) to produce the amidogen radical (NH2) and carbon monoxide, has been studied in shock-heated mixtures of HNCO dilute in argon. Time-histories of the ground-state NH2 radical were measured behind reflected shock waves using cw, narrowlinewidth laser absorption at 597 nm, and HNCO time-histories were measured using infrared emission from the fundamental v2-band of HNCO near 5 μm. The second-order rate coefficient of reaction (2(a)) was determined to be: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {k_{2a} = 2.1 \times 10^{14}\, {\rm exp(- 8500/T,K)}} & {{\rm (f} = 0.5,{\rm F} = 1.75)} & {{\rm T = 2340} - {\rm 3270\,K,}} \\ \end{array} $$\end{document} cm3 mol-1 s-1, where f and F define the lower and upper uncertainty limits, respectively.An upper limit on the rate coefficient of was determined to be: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {k_5 \le 5.0 \times 10^{11} {\rm cm}^{\rm 3}\, {\rm mol}^{{\rm - 1}} {\rm s}^{{\rm - 1}},} & {{\rm T} = 2340 - 2680\,{\rm K}{\rm .}} \\ \end{array} $$\end{document}
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/kin.550230802
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