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Combustion, Explosion and Shock Waves

2019 year, number 2

Investigation of the Chain Reaction of Hydrogen Oxidation by Sulfur Dioxide

A. A. Mantashyan, E. M. Makaryan, L. S. Arakelyan
Institute of Chemical Physics, National Academy of Sciences of Armenia, 374014 Erevan, Armenia
Keywords: сера, диоксид серы, цепная реакция, окисление водорода, sulfur, sulfur dioxide, chain reaction, hydrogen oxidation

Abstract

A non-catalytic reaction of hydrogen interaction with sulfur dioxide is studied. It is found that this reaction in fact is a chain reaction of hydrogen oxidation by sulfur dioxide resulting in the formation of elementary sulfur. A mechanism of this reaction is proposed. The reaction is studied under static conditions in the temperature interval from 350 to 500oC at a pressure of the reactingmixture with a stoichiometric composition equal to 300 torr. The numerical kinetic analysis of the mechanism is consistent with experimental data.