| 초록 |
Due to the increased demand for the production of clean synthetic fuels using syngas, which could be derived from the various reforming processes of hydrocarbons, the efficient reforming catalysts have been largely investigated for last several decades. The reforming catalysts for the combined steam and CO2 reforming with CH4 were investigated on Ni/CeO2-ZrO2-modified MG30 (weight ratio of MgO/Al2O3=3/7, MgAl2O4) catalyst to verify the effects of Ce/Zr weight ratio at a fixed nickel weight ratio of Ni/(Ce+Zr)=1.0/0.1 with 12wt%Ni on MG30 support. The catalysts were prepared by co-precipitation method using nickel, zirconium and cerium nitrate precursors with a precipitant of Na2CO3. The catlayst possesing an equal weight ratio of Ce/Zr was found to show the highest catalytic activity, and it was verified by characerizing the particel size variation of nickel species and its reducibility. |
