Hydrogen Production by Steam Reforming of Bio-Oil Aqueous Fraction over Ni/CeO_(2)-ZrO_(2) Catalyst

摘要

Two kinds of Ni/CeO_(2)-ZrO_(2) catalysts were prepared by impregnation method or by co-precipitation method. A laboratory scale fixed-bed reactor was employed to investigate the catalyst performance in hydrogen production by steam reforming bio-oil aqueous fraction. Effects of reaction temperature, and the different preparation methods of the catalyst on the hydrogen production performance of Ni/CeO_(2)-ZrO_(2) catalysts were examined. The obtained results were compared with commercial nickel-based catalysts (Z417). Ni/CeO_(2)-ZrO_(2) catalyst by co-precipitation method showed the best catalytic performances. At W/B=4.9, T=800 °C, H_(2) yield reaches the highest of 72.9 % and H_(2) content of 70.0 % were obtained., these values were higher than Ni/CeO_(2)-ZrO_(2) catalysts were prepared by impregnation method and commercial nickel-based catalysts (Z417).