The Effect on the Coexistent Gases on the Thermal Reaction of Toluene or Methane in a Clusius-Dickel Type Thermal Diffusion Column

Article abstract of DOI:10.1246/bcsj.65.3434

The thermal reactions of toluene or methane in a Clusius-Dickel type thermal diffusion column was investigated in the temperature range from 1300 K to 1470 K under atmospheric pressure from the viewpoint of the effect of coexistent gases to clarify the effect of thermal diffusion on the reactions.The addition of hydrogen accelerated the hydrogenolysis of toluene resulting in the high selectivity of benzene.Contrarily, by the addition of either helium or nitrogen, the reactions were retarded.On the other hand, the reactions of methane were promoted by the addition of n itrogen, and retarded by the addition of helium.This difference of the effect of coexistent gases of helium and nitrogen shows that the partial separation of reaction mixture due to thermal diffusion and convection actually occurs and has a great influence on the reaction results in a Clusius-Dickel type thermal diffusion column.