Cobalt plays a vital role in catalysing the removal of sulphur from oil, contributing to a more sustainable society. Desulphurisation is the process by which sulphur is removed from oil. A significant use of cobalt globally is as part of catalysts in this desulphurisation process. The use of cobalt in desulphurisation reactions represents the highest tonnage of cobalt use in the catalyst sector.
The H2S can then be converted into either elemental sulphur or into sulphuric acid (H2SO4), which is then used for other industrial processes. CoMOX catalysts contain 3-5% tricobalt tetraoxide (Co3O4), 14% molybdenum trioxide (MoO3) and 83-85% alumina (Al2O3). As CoMOX catalysts are very resistant to poisoning and degradation they are the ideal choice for use in desulphurisation reactions.