| 초록 |
Nanoporous copper-manganese oxide catalyst was prepared by a redox-precipitation process in the presence of inorganic porous supports such as alkaline silicates, colloidal silica, and boehmite nanoparticle. In a typical process, aqueous dispersion of inorganic support materials was prepared at first, then potassium permanganate was dissolved into the dispersion, followed by a dropwise addition of aqueous solution of manganese acetate and copper acetate under vigorous stirring. The resultant precipitate was filtered, washed thoroughly using de-ionized water, dried at 120℃, and finally heat treated at the given temperature for 2h in air. Such prepared composite catalysts were systematically investigated using XRD, XRF, FE-SEM, and BET along with the gas removal efficiency test. It was fund that the CO removal performance showed the support material dependency rather than the porosity, while the other gases showed stronger dependency on porous texture than material itself. |
