| 초록 |
The Mesoporous Mn-Co-Ce mixed oxide catalysts were investigated for CO preferential oxidation (CO PROX) reaction, which was synthesized via nano-replication method using a hard template of KIT-6. The catalysts were characterized by X-ray diffraction, N2 adsorption–desorption, H2-temperature programmed reduction, CO-temperature programmed desorption and X-ray photoelectron spectroscopy. All of the catalysts had uniform mesopores and high surface areas. The distinct catalytic properties of these well-characterized mesoporous materials were demonstrated for preferential CO oxidation. Among them, the Mn:Co:Ce=23.75:71.25:5 system presented the best CO conversion at low temperatures and the best selectivity toward CO2. The received mesoporous Mn-Co-Ce mixed oxide possessed excellent textural properties. The structural stability was mainly attributed to the strong and stable interactions between cobalt oxides and manganese oxides. |
