| Bio-oil can be produced via pyrolysis of biomass, and can be further transformed to hydrogen via catalytic reforming. In order to address concerns of carbon deposition and endothermicity of reforming process, the auto-thermal reforming(ATR process) was adopted. ATR, in which oxygen was introduced, can balance the reaction heat by adjusting the ratio of oxygen in feed. In this study, acetic acid(AC) as a model compound of bio-oil was used in ATR for hydrogen production, while ordered mesoporous catalysts of Ni-Sm-Al and Ni-Y-Zr were tested in ATR of AC.In this work, ordered mesoporous Ni-Sm-Al catalysts were prepared by evaporation self-assembly, and Ni-Sm-Al-IMP catalysts were prepared by impregnation method, and then tested in ATR of AC. The results showed that in a 30 h ATR test, a stable reactivity of the 10wt%Ni-(2Sm-Al) catalyst prepared by evaporation self-assembly was observed: the AC conversion and hydrogen production remained near 100% and 2.60 mol-H2/mol-AC, respectively. The characterization results indicated that ordered mesoporous structure was succeed prepared, and the addition of Sm was helpful to increase surface area and pore volume, which can explain the improved catalytic activity, stability and resistance to carbon deposition.In the current work, Ni-Y-Zr catalysts were prepared by evaporation self-assembly method and tested in ATR of AC, and then characterized by XRD, H2-TPR, BET and TG. The results showed that the 15mol% NiO-10mol% Y2O3-65mol% ZrO2 catalyst performed better in ATR of AC: the AC conversion and hydrogen production maintained at 100% and 3.05 mol-H2/mol-AC, respectively. The characterization results indicated that the better performance can be attributed to the high specific surface area, pore volume and stable Ni species. |
