Heterogeneous Reaction of Dimethyl Sulfide with a Chlorine Atom

The reaction rate constant of a chlorine atom with dimethyl sulfide (DMS) is measured in the temperature range 308–366 K by the method of resonant fluorescence (RF) of chlorine atoms. It is shown that the reaction rate constant decreases during experiments at a higher temperature. At a temperature of 308 K, the rate constant of this reaction is measured at different ratios of the reaction time and the diffusion time of chlorine atoms to the reactor wall. The data of these experiments show that with an increase in the diffusion time of the active centers to the surface of the reactor, compared with the contact time of the reagents, a decrease in the measured reaction rate constant is observed. This allows us to assert that the reaction is heterogeneous and the interaction of the chlorine atom with the DMS occurs on the surface of the reactor.