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- W2043979426 abstract "The reactions of NH(X3Σ−) with O2(2) and with NO(3) were investigated belind incident shock waves at temperatures ranging from 1200 to 2200 K, which are of importance for many technical combustion processes. The source of NH was the thermal dissociation of HN3. Time histories of NH(X3Σ−) were measured by narrow line-width laser absorption detection at 336.100 nm. H and O atom formation was followed by ARAS at 121.6 and 130.5 nm, respectively. For the following reactions NH+O2→NO+OH (2a) →NO2+H (2b) →HNO+O (2c) NH+NO→products (3) the rate coefficients were determined (with an error margin of 50%) to be k2a=4.5·108T0.79exp(−5.0 kJ mol−1/RT) cm3/mol s, 298 K<T<2200 K k2b+k2c=2.1·1013exp(−66.2 kJ mol−1/RT) cm3/mol s, 1200 K <T<2200 K k3=1.0·1013 cm3/mol s, 1300 K<T<2200 K The earlier data of Hack et al. [1] were considered in the determination of k2a. For reaction (2), it was shown by measurements of O and H atoms that at temperatures above 17 00 K channel (2b) or (2c) becomes dominant. The strongly curved Arrhenius behavior of the overall rate constant can be explained by this change of product channel. For reaction (3), no temperature dependence of the overall rate constant was observed. In connection with previous data of Mertens et al. [9] and Lillich et al. [11], a minimum of the overall rate constant is found around 1400 K." @default.
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- W2043979426 date "1996-01-01" @default.
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- W2043979426 title "A kinetic study of the reactions of NH(X3Σ−) with O2 and no in the temperature range from 1200 to 2200 K" @default.
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- W2043979426 doi "https://doi.org/10.1016/s0082-0784(96)80260-8" @default.
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