| 초록 |
Ni-La2O3-Ce0.8Zr0.2O2 catalysts with different La2O3 content has been applied to low temperature steam reforming of methane. The catalysts are prepared by co-precipitation method. To understand the physicochemical properties of catalysts, various techniques has been carried out such as BET, XRD, TPR, H2-chemisorption. BET surface area, Ni dispersion, crystallite size of Ni, and reducibility are strongly dependent on the La2O3 content. Among the prepared catalysts, Ni-La2O3-Ce0.8Zr0.2O2 catalyst which is contained 70 wt.% La2O3 shows the highest CH4 conversion (XCH4 ＞ 53.3%). This result is mainly due to high Ni dispersion, small crystallite size of Ni and high reducibility. |
