Catalyst Research for the Shell Chlorine Process

摘要: A catalyst has been developed for the catalytic oxidation of HCl to chlorine at relatively low temperature, e.g. 350–365°C. It is a copper-didymium-potassium chloride combination emplaced on silica support large surface area and mean pore diameter volume. The disadvantages known catalysts, such as conversions, necessity operating high reaction temperatures, volatilization active material severe corrosion equipment have overcome. yields virtually equal equilibrium conversion 77% 365°C space velocity 120 l HCl/kg/h. insensitivity poisons was demonstrated by successful use technical-grade containing partly chlorinated hydrocarbons water. drop in activity negligible temperatures up 400°C lengthy tests about 2000 h. promoter action alkali rare earth metal chlorides reflected changes pressure interpreted terms inorganic physical chemistry.