The thermodynamic analysis of sulfolene synthesis reaction was carried out by group-contribution method. The reaction enthalpy

entropy

Gibbs free energy and equilibrium constant were calculated in the temperature range of 300—600 K and the pressure range of 0.1—10 MPa. The effects of temperature

pressure and reactant ratio on equilibrium conversion were also discussed. The calculation results indicate that sulfolene synthesis is a reversible exothermic reaction

and it is spontaneous when the temperature is less than 460 K at standard pressure. The reaction occurs more easily at lower temperatures and higher pressures. Temperature

pressure and the reactants ratio all show significant effect on equilibrium conversion

and the temperature is the most significant factor. Lower temperature

higher pressure and higher reactant ratio favor the promotion of equilibrium conversion

and the maximum equilibrium conversion is close to 1. The experimental results show good agreement with the thermodynamic calculation

and the relative deviation is less than 10%.