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以水热法合成的介孔铈锆固溶体为载体,采用浸渍法制备了Ni/CexZr1-xO2催化剂,使用X射线衍射(XRD)、程序升温还原(TPR)和热重-差示扫描量热分析(TG-DSC)等测试手段对催化剂进行了表征。通过对比以ZrO2,CeO2,Ce0.6Zr0.4O2和Ce0.33Zr0.67O2为载体的Ni基催化剂性能,发现铈锆固溶体独特的氧化还原性质可以提高活性组分的分散度,增强催化剂的抗积炭性能,从而提高催化剂对甲烷二氧化碳重整制合成气的选择性。
The Ni / CexZr1-xO2 catalyst was prepared by impregnation method using mesoporous cerium-zirconium solid solution synthesized by hydrothermal method. X-ray diffraction (XRD), temperature programmed reduction (TPR) and thermogravimetric-differential scanning calorimetry (TG-DSC) and other testing methods were characterized on the catalyst. By comparing the performance of Ni-based catalysts with ZrO2, CeO2, Ce0.6Zr0.4O2 and Ce0.33Zr0.67O2 as carriers, it is found that the unique redox properties of the cerium-zirconium solid solution can improve the dispersion of the active components and enhance the anti-carbon deposition of the catalyst Performance, thereby increasing the selectivity of the catalyst for the reforming of methane with carbon dioxide to syngas.