| 초록 |
5 wt.% Ni/Ce0.8Zr0.2O2 catalysts were prepared by incipient wetness impregnation method. Ce0.8Zr0.2O2 support was provided a different calcination atmosphere (20% H2/N2, N2, and ambient air). The difference in calcination atmosphere affected the oxygen storage capacity (OSC) of the Ce0.8Zr0.2O2 support. Interestingly, the dispersion of Ni0 in the catalyst showed a similar trend to the OSC of the support because of the anchoring effect, and that dispersion determined the catalytic activity of the dry reforming reaction. The catalyst prepared with the support calcination atmosphere in 20% H2/N2 showed the highest OSC of the support, highest Ni0 dispersion and smallest Ni0 crystallite size of the catalyst after impregnating Ni, resulting in the highest catalytic activity in the dry reforming reaction. |
