SEARCH Articles Figures Tables Catalysts, role in environmentally benign synthesis of chemicals Impregnated Catalysts the Role of Metal, Support and Promoters On the Role of Catalyst Sulfur in Catalytic Hydrodesulfurisation Some Conclusions from Tracer Studies Perovskite-based catalysts for environmental pollution control The role of electron microscopy Role and Effect of Catalyst Role of Industrial and Biological Catalysts Role of Metal Catalysts Role of diffusion in pellets Catalyst effectiveness Summary — Role of the Catalysts The Role of Alumina in Ternary Catalysts The Role of Catalysts