Hydrogen Generation from Ethanol Steam Reforming over Rare Earth Promoted Nickel-based Catalysts

Rare earths promoted nickel-based catalysts were synthesized via an impregnate method. The catalytic performances of the as-prepared catalyst for ethanol steam reforming were evaluated by a reforming system. It is found that rare earth promoters can help increasing H₂ yield, CO₂ selectivity, and ethanol conversion, as well as decreasing CH₄ selectivity. Among all the rare earths promoted catalysts, the CeO₂ promoted one shows the highest H₂ yield over 4.7. Additionally, it is proved that pre-deoxidization of the catalysts can benefit for the ethanol steam reforming reaction, and carbon deposit can be suppressed at higher pre-deoxidization temperature.