| 초록 |
The polymer electrolyte fuel cell (PEMFC) is a promising candidate for utilizing hydrogen to produce electricity. Although a number of sources of hydrogen are known, most attractive one, at present, is hydrocarbons such as oil, natural gas, coal and biomass. To extract hydrogen from these, a couple of reactions should be occurred such as reforming and water-gas shift reactions. Until now, Pt has been utilized for anode of PEMFC and prone to be poisoned with minute amounts of CO in dihydrogen stream. Therefore, carbon monoxide should be removed completely prior to fuel cell. Methanation and oxidation were proposed to accomplish this goal. In this presentation, the removal of carbon monoxide with catalytic oxidation over various catalysts is disclosed. Supported gold catalysts, mixed metal oxides, and supported noble metal catalysts are tested. Each catalyst showed different reaction temperature regions to be effective in selective oxidation of carbon monoxide in dihydrogen stream. |
