The fabricating technologies of diesel oil hydrotreating catalysts are considered to have developed through three stages in general.Consequently,three generations of hydrotreating catalysts have been formed,which are monolayer-dispersed and supported metallic sulfide catalysts,multilayer-dispersed and supported metallic sulfide catalysts and unsupported metallic sulfide catalysts,respectively.The application background,fabrication thoughts and progress in the researches of the molybdenum sulfide-based hydro...