| 摘要 |
PURPOSE: A preparation method of silica stabilized copper catalyst used in hydrogenating or dehydrogenating organic compounds is provided, and the catalyst prepared by the method is provided. CONSTITUTION: The preparation method of Cu/SiO2 catalyst comprises the steps of (a) preparing a slurry solution of copper hydroxide by adding a precipitant solution to an aqueous copper salt solution; (b) preparing a copper hydroxide-silica slurry solution by stirring the mixed solution after adding a colloidal silica solution to the slurry solution; (c) separating sediments from the solution and cleaning the sediment after aging the copper hydroxide-silica slurry solution at a temperature of 50 to 100 deg.C; and (d) drying and baking the cleaned sediment, wherein the precipitant is carbonate or hydroxide of alkaline metal, a weight ratio of copper oxide (CuO) to silica (SiO2) of catalyst is 9:1 to 3:7, the colloidal silica is stabilized by ammonium (NH4¬+), Na¬+ or other alkali metal, has a particle size of 4 to 60 nm, surface area of 100 to 300 m¬2/g and concentration of 5 to 60 wt.% on the basis of silica, and the aging is performed at a temperature of 60 to 90 deg.C for 0.5 to 24 hours.
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