Shock-tube study of the reactions of hydrogen atoms with benzene and phenyl radicals

Abstract

The reactions of hydrogen atoms with phenyl radicals, H + C 6H5 -* products (1), and with benzene, H + C 6H6 -. products (2), have been studied behind reflected shock waves in the temperature range 1200-1350 K with argon as the bath gas. H-atom resonance absorption spectrometry at 121.6 nm was used as detection technique. Hydrogen atoms and phenyl radicals were produced by thermal decomposition of C2H51 and C6H51, respectively. Low initial concentrations (~1012-1015 cm3) were employed to suppress consecutive bimolecular reactions as far as possible. © by Oldenbourg Wissenschaftsverlag.