## Abstract The vibrational excitation of HF occurring behind incident shock waves has been studied in the temperature range of 1400Β°K to 4100Β°K. The extent of excitation was determined as a function of time by continuously monitoring the emission intensity from the 1β0 band of HF centered at 2.5 ΞΌ
Cyanogen pyrolysis and the CN + NO reaction behind incident shock waves
β Scribed by M. B. Colket III
- Publisher
- John Wiley and Sons
- Year
- 1984
- Tongue
- English
- Weight
- 743 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0538-8066
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β¦ Synopsis
The reaction chemistry of C,N,-Ar and C,N,-NO-Ar mixtures has been investigated behind incident shock waves. Progress of the reaction was monitored by observing the cyano radical (CN) in absorption a t 388.3 nm. A quantitative spectroscopic model was used to determine concentration histories of CN. From initial slopes of CN concentration during cyanogen pyrolysis, the rate constant for C,N, + M -+ 2CN + M (1) was determined to be K , = (4.11 5 1.8) x 1OI6 exp(-47,070 5 1400/T) cm3/mol . s. A reaction sequence for the C,N,-NO system was developed, and CN profiles were computed. By comparison with experimental CN profiles the rate constant for the reaction CN + NO + NCO + N (3) was determined to be k, = 10"40f03r exp (-21,190 2 1500/T) cm3/mol . s. In addition, the rate of the four-centered reaction CN + NO + N, + CO (2) was estimated to be approximately three orders of magnitude below collision frequency.
π SIMILAR VOLUMES
## Abstract The combination of sensitive detection of formaldehyde by 174 nm absorption and use of ethyl iodide as a hydrogen atom source allowed direct measurements of the reaction H + CH~2~O β H~2~ + HCO behind shock waves. The rate constant was determined for temperatures from 1510 to 1960 K to
## Abstract VisβUV appears throughout the paper due to a composition error. It should be VβUV (vacuum ultraviolet). Β© 2002 Wiley Periodicals, Inc. Int J Chem Kinet 34: 568, 2002; DOI 10.1002/kin.10085