High temperature gas phase reaction of SnOg with O2

Abstract

The gas phase reaction of SnO_g with O₂ was studied behind reflected shock waves at temperatures between 1700 and 2300 K and pressures around 100 kPa by applying atomic resonance absorption spectroscopy for time-resolved measurements of O atoms at 130.6 nm. The source of gas phase SnO_g were SnO nanoparticles which rapidly evaporate behind the reflected shock wave in a few microseconds. For the reaction SnO_g + O₂ → SnO_2,g + O a rate coefficient of k₁ = 10^14.78±0.19 × exp(−23 530 ± 840 K/T) cm³ mol⁻¹ s⁻¹ was determined for the temperature range of the present experiments.