Dry (CO₂) reforming of methane is conducted over two newly synthesized Ni20/Ce‐γAl₂O₃ and Ni20/Ce‐meso‐Al₂O₃ catalysts. The x‐ray diffraction (XRD) patterns indicated that Ni20/Ce‐meso‐Al₂O₃ exhibits a better dispersion of nickel, while Ni20/Ce‐γAl₂O₃ has larger amounts of nickel crystallites. The temperature programmed desorption (TPD) kinetics analysis indicated that Ni20/Ce‐meso‐Al₂O₃ had a lesser metal‐support interaction than the Ni20/Ce‐γAl₂O₃. The thermal gravimetric analysis (TGA) indicated that the incorporation of ceria into the Al₂O₃ matrix helps to stabilize Ni20/Ce‐meso‐Al₂O₃ during dry reforming of methane. The temperature programmed reduction (TPR) indicated that the synthesized catalysts were sufficiently reducible below 750 °C. A fixed bed reactor evaluation (at 750 °C) showed that both catalysts can facilitate methane reforming to syngas with minimal coking throughout the 30 hours time‐on‐stream (TOS). However, Ni20/Ce‐meso‐Al₂O₃ is more promising in terms of prolonged stability for dry reforming applications. Moreover, the syngas yield for Ni20/Ce‐γAl₂O₃ is close to equilibrium prediction during the first 1 hour of reaction time.

中文翻译：

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金属载体相互作用对Ni / Ce-Al2O3催化剂上甲烷干重整的影响

干燥（CO ₂）重整甲烷经两个新合成NI20 / Ce的γAl进行₂ ö ₃和NI20 / Ce的内消旋的Al _2种ö ₃催化剂。的x射线衍射（XRD）图案表明NI20 / Ce的内消旋的Al ₂ ö _3所表现出更好的分散的镍，而NI20 / CE-γAl ₂ ö ₃具有较大量的镍微晶的。的程序升温脱附（TPD）动力学分析表明，NI20 / Ce的内消旋的Al ₂ ö ₃具有比NI20 / Ce的γAl较小的金属-载体相互作用₂ ö ₃。热重分析（TGA）表明，将二氧化铈掺入Al ₂ O ₃基体有助于在甲烷干重整过程中稳定Ni20 / Ce-meso-Al ₂ O ₃。程序升温还原（TPR）表明合成的催化剂在750℃以下可充分还原。固定床反应器评估（在750°C下）表明，在整个30小时的运行时间（TOS）中，两种催化剂都可以促进甲烷重整为合成气，并且焦化最少。但是，就干重整应用的长期稳定性而言，Ni20 / Ce-meso-Al ₂ O ₃更具前景。此外，合成气产量为NI20 / CE-γAl ₂ ö ₃ 在反应时间的前1小时内接近于平衡预测。