Other work has concentrated on materials ranging from nonprecious metal catalysts such as cobalt and chromium to catalysts consisting of fine dispersions of particles embedded in porous composite structures 其他研究工作则著重于别的材料，涵盖钴或铬等非贵金属，以及成份为嵌于多孔复合物结构中的微小颗粒的触媒。
