Improving Sulphur Dioxide Yield in the Sulphuric Acid Thermal Decomposition Process through the Application of High Temperature Ceramic Membrane Separations

摘要

Sulphuric acid thermal decomposition is part of a number of promising thermochemical water splitting cycles, including the hybrid sulphur (HyS) [1, 2] and sulphur iodine (SI) [3] cycles. The decomposition reaction is endothermic and occurs in two stages, as seen in the reaction equation below [4]. Sulphur trioxide decomposition to sulphur dioxide exhibits a poor yield in the temperature range accessible by conventional heat sources.