| 초록 |
The tri-reforming of CH4 over Ni-YSZ based catalysts as CO2 reduction and sequestration technology was preformed to produce a synthesis gas for application in the production of high valued chemicals and a fuel processor of SOFC and MCFC systems. The catalysts were prepared by physical mixing and impregnation methods. The tri-reforming reaction was carried out at a temperature rage of 650 to 850 ℃ and feed molar ratio of CH4 / CO2 / H2O / O2 = 1 / 1 / 1 / 0.1 in a fixed bed reactor system. The catalysts before and after the reaction were characterized by N2 physisorption, XRD, TEM, SEM and Elemental analysis. It was found that the tri-reforming reaction was a more desirable process for the production of synthesis gas than other reforming process. It was also found that Ni-YSZ-CeO2 catalyst showed higher catalytic activity and stability than commercial Holder Torpsoe and ICI catalysts. The results suggest that Ni-YSZ-CeO2 catalyst is a promising candidate for the production of synthesis gas from greenhouse gases. |
