| Summary: | 碩士 === 大同大學 === 化學工程學系(所) === 92 === In order to remove carbon monoxide (CO) from the hydrogen-rich gas mixtures, the selective oxidation of CO to CO2 has been attempted by use of supported metal catalysts. Ideally, the catalyst must be selectively oxidized about 0.5-2% CO to less than 100 ppm without oxidizing any of 30-70% H2 present. In this work, selectivity to the CO oxidation against the H2 oxidation is very important. The oxidative consumption of H2 will bring about lower efficiencies in the energy conversion of the fuel cell system.
Pt/Al2O3 and CuO/ZnO/Al2O3 catalysts prepared by the impregnation method applied for selective oxidation removal of CO from H2-rich gas were investigated in a fixed bed reactor. Pt/Al2O3 and CuO/ZnO/Al2O3 catalysts were characterized by BET (Brunauer-Emmett-Teller method), SEM (Scanning Electron Microscope), XRD (X-ray Diffraction) and FTIR (Fourier Transform Infrared Spectroscopy). The effects of CO concentration, bed temperature, catalyst impregnated amount, contact time and presence of CH4 were also investigated.
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