The kinetically effective stoichiometry of reactions in the carbon-sulphur dioxide system

Abstract

The kinetically effective stoichiometry of reactions resulting from contacting carbon and sulphur dioxide at elevated temperatures involves the five overall reactions: 2C + 2SO2 → 2CO2 + S2 C+ S2 + CO2 → 2COS C+ 2COS → CS2 + 2CO C+ COz -, 2C0 C+S, -+ CS, The rates of the two reactions forming carbon disulphide are shown to have similar temperature dependence in the range 800-950°C, while the carbon-carbon dioxide reaction is shown to be more temperature sensitive than the carbon-carbonyl sulphide reaction in the same temperature range. The existence of parallel routes for carbon disulphide formation was detected by using a mechanistic argument to remove the redundancy in the system where carbon disulphide was concerned.