Chemical Cogeneration in Solid Electrolyte Cells: The Oxidation of to

The anodic oxidation of was investigated in the solid electrolyte fuel cell , , , , air operating at atmospheric pressure and temperatures 650° to 800°C. It was found that the fuel cell product selectivity crucially depends on the ratio of the fluxes of oxygen anions O 2− and reaching the porous Pt anode. When , elemental sulfur is the major product, and the anode is severely polarized. For higher values, the product selectivity to exceeds 99% at conversions as high as 99%. The cell appears to be a promising candidate for the cogeneration of electric energy and sulfur dioxide.