Zr- and Y-promoted Ni/Mg/Al double-layered hydroxides were investigated in dry reforming of methane, DRM (10% CH₄, CH₄/CO₂ = 1, GHSV = 20,000 h⁻¹) for the first time. Modification of the double-layered hydroxides with 5 wt% of zirconium and 0.4 wt% of yttrium resulted in the formation of ZrO₂-Y₂O₃ solid solution, which largely contributed to the enhancement of catalyst's stability with time-on-stream at 700 °C in DRM. Also, the modified catalyst demonstrated the limitation of the reverse WGS reaction, as confirmed by powder XRD due to the absence of the rhombohedral hydrotalcite structure.

中文翻译：

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Zr和Y改性的Ni / Mg / Al双层氢氧化物上的甲烷干重整

首次在甲烷，DRM（10％CH ₄，CH ₄ / CO ₂  = 1，GHSV = 20,000 h ^-1）的干重整中研究了Zr和Y促进的Ni / Mg / Al双层氢氧化物。用5 wt％的锆和0.4 wt％的钇对双层氢氧化物进行改性导致ZrO ₂ -Y ₂ O ₃固溶体的形成，这在很大程度上提高了催化剂在运行时的稳定性。在DRM中为700°C。而且，由于不存在菱面体水滑石结构，因此通过粉末XRD证实了改性催化剂显示出WGS逆反应的局限性。