Highly ordered mesoporous cobalt oxides (denoted as m-Co-KIT-6 and m-Co-SBA-15) with three dimensional and two dimensional pore morphology respectively have been synthesized using 3D KIT-6, and 2D SBA-15 as silica template via nanocasting route. CO₂ hydrogenation activity was evaluated for these mesoporous materials under atmospheric pressure conditions. In comparison to nanoparticles of cobalt oxide (Co₃O₄-nano), mesoporous catalysts showed excellent activity for CO₂ hydrogenation due to their higher number of exposed active sites and lower mass diffusion limitations. The ordered mesoporous structure of Co₃O₄ catalysts favored the chain growth of carbon atoms for the production of C₂₊ hydrocarbons while Co₃O₄ nanoparticles showed strong selectivity toward CH₄. High selectivity for C₂₊ (∼ 25%) was obtained for both m-Co-KIT-6 and m-Co-SBA-15 catalysts at 320 °C. In addition, the 3D pore structure of m-Co-KIT-6 catalyst exclusively formed more olefins (54.9%) fraction.

使用3D KIT-6和2D SBA-15作为二氧化硅模板分别合成了具有三维和二维孔隙形态的高阶介孔钴氧化物（分别表示为m-Co-KIT-6和m-Co-SBA-15）通过纳米铸造路线。在大气压条件下评估了这些介孔材料的CO ₂氢化活性。与氧化钴（Co ₃ O _4-纳米）的纳米颗粒相比，介孔催化剂由于其暴露的活性位点数量更多且质量扩散限制较低，因此具有出色的CO ₂氢化活性。Co ₃ O ₄的有序介孔结构催化剂有利于碳原子的链增长以生产C ₂₊烃，而Co ₃ O ₄纳米颗粒对CH _4的选择性强。对于m-Co-KIT-6和m-Co-SBA-15催化剂，在320°C下对C _2+的选择性很高（约25％）。此外，m-Co-KIT-6催化剂的3D孔结构专门形成了更多的烯烃（54.9％）馏分。