To strip oxygen from SO2 gas and obtain elemental sulfur, several chemical reactions can be explored. The challenge is that many reactions tend to produce sulfates rather than elemental sulfur. A potential approach involves using redox reactions, as indicated in the provided resources. The first link discusses redox chemistry over cerium oxide, which may facilitate the reduction of SO2 to elemental sulfur. The second link outlines methods for producing elemental sulfur from SO2, suggesting that specific catalytic processes could effectively achieve the desired reduction. Overall, the focus is on identifying suitable redox reactions or catalytic processes that can selectively reduce SO2 to sulfur without forming sulfates.
