The aim of this study was to evaluate a perovskite catalyst for use as a carbon-resistant catalyst in methane dry reforming. The oxygen-rich ABO_3+δ (CeCo_xNi_1-xO_3+δ) perovskite was selected for this investigation due to its crystalline nature and ability to accommodate a wide range of cations; perovskites notably possess catalytically advantageous oxidation and reduction properties. The perovskite catalysts were prepared as multicomponent oxides by sol-gel synthesis, which is considered a most effective technique for preparing these compounds. The properties of fresh catalysts were evaluated through X-ray diffraction, Brunauer-Emmett-Teller surface area analysis, particle size distribution analysis, X-ray photoelectron spectroscopy, and scanning electron microscopy. The tested catalysts exhibited superior catalytic performance over previously-studied ABO₃ catalysts, such as LaCoO₃ and LaNiO₃ systems. This high performance is attributed to electronic interactions between the Co and Ni sites, which results from the atomic-level mixing of ingredients in the sol-gel method. Analysis results revealed that when used as a catalyst in methane dry reforming, the presence of ceria in the perovskite system can improve coking resilience and confer stability even under prolonged usage in a carbon-rich environment.

这项研究的目的是评估钙钛矿催化剂在甲烷干重整中用作抗碳催化剂。富氧ABO _{3 +δ}（CeCo _x Ni _1-x O _{3 +δ}）由于钙钛矿的晶体性质和能够容纳多种阳离子的能力而被选择用于此研究；钙钛矿特别地具有催化有利的氧化和还原性能。通过溶胶-凝胶合成将钙钛矿催化剂制备成多组分氧化物，这被认为是制备这些化合物的最有效技术。通过X射线衍射，Brunauer-Emmett-Teller表面积分析，粒度分布分析，X射线光电子能谱和扫描电子显微镜对新鲜催化剂的性能进行了评估。与先前研究的ABO ₃催化剂（如LaCoO ₃和LaNiO _3）相比，测试过的催化剂表现出优异的催化性能。系统。这种高性能归因于Co和Ni位点之间的电子相互作用，这是由溶胶-凝胶法中成分的原子级混合产生的。分析结果表明，当在甲烷干重整中用作催化剂时，钙钛矿体系中二氧化铈的存在可以提高焦化弹性，即使在富含碳的环境中长时间使用也可以赋予稳定性。