Abstract
The conditions of the existence were determined and reasons were revealed for the appearance of periodic oscillations of the SO2concentration in the reaction products and warming temperature in the catalyst bed in the oxidation of H2S with oxygen at temperatures below the dew point of sulfur on the V–Al–Ti oxide catalyst. The formation of polysulfides during the reaction was experimentally found. It was proposed that the adsorption of sulfur and polysulfides on the catalyst surface is responsible for the observed oscillatory processes.
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