Abstract Three typical methods, subsequent coating, co-impregnation and sequential impregnation, were employed to investigate the effect of introduction methodologies for CeO 2 -promoted Ni/SiO 2 catalysts. The CeO 2 @Ni/SiO 2 catalyst prepared with the subsequent coating method was found to exhibit the best initial activity and superior long-term stability in CO 2 reforming of methane. Comparative characterizations documented that small Ni size and intimate Ni–CeO 2 contact were generated on the CeO 2 @Ni/SiO 2 catalyst, leading to excellent reforming activity. In addition, pronounced redox property and strong surface basicity were created on the CeO 2 @Ni/SiO 2 catalyst, resulting in exceptional coke resistance and thus superior long-term stability. This work unravels the impact of various introduction methods on the catalyst structure, which would help design robust nanocomposite catalysts with outstanding catalytic performance. Graphic Abstract

中文翻译：

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CeO2 促进的 Ni/SiO2 催化剂用于甲烷的二氧化碳重整：引入方法的影响

摘要 采用后涂法、共浸渍法和顺序浸渍法三种典型方法，研究了引入方法对CeO 2 促进的Ni/SiO 2 催化剂的影响。发现采用后续涂覆方法制备的CeO 2 @Ni/SiO 2 催化剂在甲烷的CO 2 重整中表现出最佳的初始活性和优异的长期稳定性。对比表征表明，在 CeO 2 @Ni/SiO 2 催化剂上产生了较小的 Ni 尺寸和紧密的 Ni-CeO 2 接触，从而具有出色的重整活性。此外，CeO 2 @Ni/SiO 2 催化剂具有显着的氧化还原性能和强表面碱性，从而具有出色的抗焦性和优异的长期稳定性。这项工作揭示了各种引入方法对催化剂结构的影响，这将有助于设计具有出色催化性能的坚固纳米复合催化剂。图形摘要