KINETICS OF THE CH//3 plus NO//2 - greater than CH//3O plus NO REACTION AT HIGH TEMPERATURES.

S. C. Cooper*, C. Y. Lin, A. Argetsinger, Ming-Chang Lin

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

The rate constant for the CH//3 reaction is not very well established. In this study, di-t-butyl peroxide (dtBP), which can be premixed with NO//2 for a prolonged period of time with no apparent side reactions, was used as the CH//3 radical source. The experiment was carried out in a 6. 3 cm ID stainless shock tube using incident shocks. These product concentration profiles were then computed modeled with a mechanism previously established on the basis of CH//3ONO**5 and CH//3NO//2**6 decomposition reactions. To understand the effects of temperature and pressure on the CH//3 plus NO//2 reaction, we have performed an RRKM calculation. The computed RRKM rates for CH//3O radical formation covering from 295 to 2000 K vary only slightly with temperatures, consistent with the data obtained from this and the other two recent studies.

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