| 초록 |
Silica supported Mn based oxide catalysts, CuO:MnO2, CuMn2O4, and Mn3O4, were prepared by a redox-precipitation and alkali silicate titration metod. In a typical process, nano-sized oxide particle was first prepared by a redox precipitate, followed by a basic alkali silicate (Na2SiO3) titration to obtain porous materials. The cylindrical-type porous pellets containing manganese based oxide catalyst were prepared by roller-dice extrusion method. The physical properties such as packing density, hardness, and porous parameters along with the gas removal performance were investigated for the pellet-type filter media. Thus prepared oxide catalyst-loaded pellets exhibited pellet hardness of 4.0 ~ 6.0 kg/cm2, packing density of 0.4 ~ 0.5 g/cm3, specific surface area of 200 ~ 250 m2/g, total pore volume of 0.65 ~ 0.80 cm3/g, respectively. |
