Nickel particles deposited on hydrothermally synthesized ceria nanorods (CeO₂-NR) were found to be highly active and stable for CO₂ methanation. A CO₂-to-CH₄ yield of 92% was achieved at 300 °C. The impact of various operational parameters was explored in conjunction with a thermodynamic analysis. The superior performance of Ni/CeO₂-NR was demonstrated through a comparison with i) CeO₂ and Ni/CeO₂ commercial products, ii) various M/CeO₂-NR lab-synthesized catalysts (M = Cu, Co, Fe), and iii) state-of-the-art literature catalysts. The results revealed that a unique combination of Ni with ceria nanorods is required for boosting the reducibility and in turn the methanation efficiency.

发现沉积在水热合成的二氧化铈纳米棒（CeO ₂ -NR）上的镍颗粒对CO ₂甲烷化具有很高的活性和稳定性。在300℃下获得了92％的CO ₂ -CH ₄产率。结合热力学分析探讨了各种操作参数的影响。通过与i）CeO ₂和Ni / CeO ₂商业产品，ii）各种M / CeO ₂的比较证明了Ni / CeO ₂ -NR的优越性能。-NR实验室合成的催化剂（M = Cu，Co，Fe），和iii）最新文献催化剂。结果表明，Ni与二氧化铈纳米棒的独特结合是提高还原度和甲烷化效率所必需的。