TiO2.MgO supports with different TiO2/MgO molar ratios (1, 1/3, 1/6, and 1/9) were prepared via the hydrothermal method and chosen as support for the 20 wt% Ni active phase. The MgO support was also modified with WO₃ and CuO for comparison. XRD, BET, SEM, H₂-TPR, and O₂-TPO analyses were conducted to estimate the structural properties of the catalysts. Examination of the BET of the catalysts showed a decreased surface area in the 18.4–63.6 m2/g range with an increasing TiO2/MgO ratio. The TiO2/MgO = 1/6 ratio exhibited the best performance and lifetime even after reaction for 20 h at 750 °C and GHSV = 54000 mL/g.h and was selected as the optimal ratio. The catalytic results also demonstrated that the TiO2, WO3, and CuO-doped Ni/MgO catalysts positively affect catalyst performance. However, due to the higher surface area and strong metal-support interaction, the Ni/TiO2.6MgO catalyst seems to be a better choice for the glycerol dry reforming process.

中文翻译：

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评价 Ni/M-MgO（M=Cu、W 和 Ti）催化剂在甘油干重整中的催化性能


通过水热法制备了具有不同 TiO2/MgO 摩尔比 （1、1/3、1/6 和 1/9） 的 TiO2.MgO 载体，并选择作为 20 wt% Ni 活性相的载体。还用 WO₃ 和 CuO 修饰了 MgO 负载以进行比较。进行了 XRD、BET、SEM、H₂-TPR 和 O₂-TPO 分析，以估计催化剂的结构特性。对催化剂 BET 的检查表明，随着 TiO2/MgO 比率的增加，比表面积在 18.4–63.6 m2/g 范围内减小。TiO2/MgO = 1/6 比值在 750 °C 和 GHSV = 54000 mL/g.h 下反应 20 h 后仍表现出最佳性能和寿命，被选为最佳配比。催化结果还表明，TiO2、WO3 和 CuO 掺杂的 Ni/MgO 催化剂对催化剂性能有积极影响。然而，由于更高的比表面积和较强的金属-载体相互作用，Ni/TiO2.6MgO 催化剂似乎是甘油干法重整工艺的更好选择。