A highly efficient sulfide catalyst for reducing sulfur dioxide to elemental sulfur, which maximizes the selectivity of elemental sulfur over byproducts and has a high conversion efficiency. Various feed stream contaminants, such as water vapor are well tolerated. Additionally, hydrogen, carbon monoxide, or hydrogen sulfides can be employed as the reducing gases while maintaining high conversion efficiency. This allows a much wider range of uses and higher level of feed stream contaminants than prior art catalysts.
1. This invention was made with Government support under Contract No. DE-ACO3-76SF00098 between the U.S. Department of Energy and the University of California for the operation of Lawrence Berkeley National Laboratory. The Government has certain rights in this invention.