Scrubbing natural gas with sulfur

Cleaning up natural gas to make the most of its methane typically entails using aqueous solutions of alkylamines to remove hydrogen sulfide and carbon dioxide from the gaseous mix. Known as sweetening because the gas smells better after H₂S is removed, this process produces elemental sulfur as a by-product. Although sulfur is used to make gunpowder and sulfuric acid, it has relatively few large-scale applications. Chemists at Korea Advanced Institute of Science & Technology have . . .