Kinetics of CN radical reactions with NOx between 297 and 740 K

Niann-Shiah Wang*, David L. Yang, Ming-Chang Lin

*Corresponding author for this work

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

The kinetics of the reaction of CN radicals with NO and NO2 have been studied with the two-laser pump-probe technique at temperatures between 297 and 740 K over a broad range of pressure. The CN + NO reaction was found to be strongly pressure dependent and the rate constant measured at 100 Torr of Ar has a negative temperature coefficient of 10.4 kJ/mol. These results suggest that the reaction occurs mainly be recombination and there is no evidence of CO + N2 formation up to 740 K. The CN + NO2 reaction was found to be very fast and pressure independent and the measured bimolecular rate constant can be represented by k2 = 10-10.40±0.12 exp + [(186 ± 23)/T] cm3/molecule s.

Original languageEnglish
Pages (from-to)479-484
Number of pages6
JournalChemical Physics Letters
Volume163
Issue number6
DOIs
StatePublished - 24 Nov 1989

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