Abstract
The reaction of CN with NO has been studied between 2200 and 2810 K with a shock tube equipped with two stabilized cw CO lasers using BrCN as the CN radical source. The rates of CO formation and NO removal, measured simultaneously with the lasers, were kinetically modeled employing a detailed reaction mechanism constructed on the basis of the result of our quantum chemical (BAC-MP4) calculations. The kinetic modeling, aided by sensitivity analysis, suggests that the CN+NO reaction occurs primarily by the abstraction channel, producing NCO+N (1), via a triplet NCON intermediate. The rate constant for this reaction can be effectively represented by k 1 = 5.5 x 1012 exp(-15,410/T) cm3/mole.s. This is consistent with the result of the quantum calculations which, however, also indicates the presence of two other minor product channels: CO+N2 (2) and NCN+O (3). The latter is enthalpically limited, whereas the former is entropically controlled because of the tight cyclic transition state, -CNNO-‡.
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© 1995 Springer-Verlag Berlin Heidelberg
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He, Y., Wu, C.H., Lin, M.C., Melius, C.F. (1995). The Reaction of CN with NO at High Temperatures in Shock Waves. In: Brun, R., Dumitrescu, L.Z. (eds) Shock Waves @ Marseille II. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-78832-1_15
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DOI: https://doi.org/10.1007/978-3-642-78832-1_15
Publisher Name: Springer, Berlin, Heidelberg
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