Reactivity of 1,3- And 1,4-cyclohexadiene with OH radicals

Dapeng Liu, Binod Raj Giri*, Aamir Farooq

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review


Cyclohexadienes (CHD) are important intermediates in the pyrolysis and oxidation of many C6 cyclic hydrocarbons. These dienes either eliminate H2 directly or lose H-atom sequentially to produce the first aromatic ring “benzene”. This is the major reaction pathway for the formation of the first aromatic ring during pyrolysis and oxidation of C6 cyclic hydrocarbons. Despite its importance in the soot formation process, the chemistry of CHD has attracted less attention from the scientific community. In this work, we investigated the hydrogen abstraction reactions of 1,3- and 1,4-CHD by OH radicals using a shock tube and laser diagnostic techniques over the temperature range of 900 - 1300 K and pressures of ~ 1 and 4 atm. The reaction kinetics were followed by monitoring OH radicals near 307 nm. The measured rate coefficients for both CHD isomers with OH radicals can be represented by the following Arrhenius expressions in units of cm3 molecule-1 s-1: "(1,3 ? CHD + OH) = 9.03 × 101"" exp 5?1360 789:(1,4 ? CHD + OH) = 1.21 × 101"= exp 5?1475 789.

Original languageEnglish (US)
StatePublished - 2019
Event12th Asia-Pacific Conference on Combustion, ASPACC 2019 - Fukuoka, Japan
Duration: Jul 1 2019Jul 5 2019


Conference12th Asia-Pacific Conference on Combustion, ASPACC 2019

ASJC Scopus subject areas

  • General Chemical Engineering
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Condensed Matter Physics


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