Detection of free hydrogen and oxygen atoms in a rarefied flame of hydrogen sulfide with oxygen by the method of electron paramagnetic resonance

Abstract

1. The cold flame of H2S + O2 was investigated by the EPR method for the first time. 2. At temperatures of 350–450° and pressures of 5–15 mm Hg, substantial concentrations (1014–1015 particles per cm3) of atomic oxygen (at a relative H2S content from 10 to 15%) and atomic hydrogen (H2S from 15 to 40%) were obtained. 3. The results obtained indicate the important role of O and H atoms in the mechanism of the combustion of hydrogen sulfide with oxygen.