A HREM study on sulfur poisoning Ni-B/SiO_2 catalysts

摘要

One of the most severe problems associated with nickel catalysts is poisoning, especially sulfur poisoning. At a complete coverage, two effects may be induced by sulfur adsorption, geometric blockage and structural changes on the surface of catalysts. This paper describes a structural HREM study of fresh and sulfur poisoned supported Ni-B/SiO_2 catalysts.