| 초록 |
Ni/MgO-Al2O3 catalysts were prepared with different MgO:Al2O3 ratio and applied to the carbon dioxide reforming of methane (CDR) using coke oven gas (COG). Catalytic reaction was carried out at 800 oC and a high gas hourly space velocity (GHSV = 1,500,000 h-1) to screen the catalytic performance. The result of the characterization, the physicochemical properties of the catalyst such as basicity, BET surface area, Ni dispersion, Ni crystallite size and reducibility varied with the MgO: Al2O3 ratio. Among the prepared catalysts, the Ni/MgO-Al2O3 (MgO:Al2O3 = 3:7) catalysts exhibited the highest CH4 conversion. This result is in mainly due to the easier reducibility, small Ni crystallite size, high Ni dispersion, and high basicity. |
