Abstract
Abstract The kinetic mechanism for converting H2S to SO and S02 has been studied in a low-pressure (80 Torr) stoichiometric CH3OH-Air flame doped with H2S in the range up to 2.4%. The experimental measurements are compared with the predictions of a reduced and updated comprehensive chemical kinetic model including 23 species and 47 pairs of elementary reactions. The agreement between model and experiment is generally good except for H atom. Analysis of the sulfur reaction mechanism clearly shows the importance of reactions H2S + H = SH + H2, H2S + OH = SH + H20, SO + OH = SO2 + H, SO + O2 = SO2 + O and S + O2 = SO + O to describe the evolution of H2S, and SO and SO2 species.
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