DECOMPOSITION OF CHLOROFLUOROCARBON USING DC THERMAL PLASMA - UTILIZATION OF WATER AS AN ADDITIVE REACTANT

The decomposition of dichlorodifluoromethane was carried out using the thermal argon plasma generated by DC arc discharge, where water was a dded to react with CCl2F2. Complete decompositions of CCl2F2 were obse rved in all experimental conditions and the product gases consisted of CO2 and CO in regard to carbon, which agreed with the results obtaine d by numerical calculations. The numerical analyses indicated the foll owing results. Only hydrogen fluoride was formed from fluorine, while HCI and Cl were produced from chlorine. The formation of Cl2 was suppr essed by the addition of H2, the amount of which was reduced when the ratio of H2O to CCl2F2 was increased. The suppression of Cl formation was also observed in the experiments.