| 초록 |
Preferential oxidation of carbon monoxide (CO-PROX) has got a great attention during decades, especially in proton exchange membrane fuel cell (PEMFC) field due to its simplicity and cost-effectiveness for the removal of CO in the H2 fuel. This is because CO gas in the H2 fuel contaminates Pt electrodes in PEMFC system, thus the performance of PEMFC diminished. Transition metal oxides have been investigated for escaping from noble metal catalysis system. Co3O4 is a well-known CO-PROX catalyst which exhibits high catalytic performance (CO oxidation by O2) at low temperature. In this work, we enhanced the CO-PROX performance of ordered mesoporous Co3O4 using 2 strategies: Co metal incorporation with ordered mesoporous Co3O4 framework and other transition metal doping. Thus, we prepared ordered mesoporous Co3O4, Co/Co3O4, and transition metals (Cu, Fe, etc.) and Co3O4 nano-composites for CO-PROX by nano-casting method using KIT-6 silica hard template. The CO-PROX activity was improved when Co metal was incorporated with Co3O4 framework. |
