Ordered meso-porous Co₃O₄ (meso-Co₃O₄) was prepared via the nano-casting route using three-dimensionally (3D) ordered meso-porous silica (KIT-6) as a hard template, whereas the bulk Co₃O₄ was prepared by the precipitation method for comparison. The prepared meso- and bulk Co₃O₄ were used as supports to prepare V₂O₅ (6 wt%) loaded catalysts by conventional wetness impregnation technique. The structural and morphological characterizations of the prepared samples were investigated by XRD, N₂-physisorption, TEM–EDX, H₂-TPR, and FT-IR analyses. The result informed that the meso-Co₃O₄ retains small particle size, high surface area, rich surface adsorbed oxygen species, and low temperature reducibility as compared with the bulk one. These characters are responsible for the better dispersion of vanadium onto the meso-Co₃O₄ support.

中文翻译：

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现代化Co 3 O 4以生产具有增强的结构和形态特征的中孔Co 3 O 4纳米颗粒

通过三维浇铸工艺，使用三维（3D）有序介孔二氧化硅（KIT-6）作为硬模板，制备了有序介孔Co ₃ O ₄（meso-Co ₃ O ₄）。通过沉淀法制备了₃ O ₄进行比较。所制备的中观和本体的Co ₃ O ₄用作载体，通过常规的湿法浸渍技术制备负载了V ₂ O ₅（6wt％）的催化剂。通过XRD，N _2-物理吸附，TEM–EDX，H ₂研究了所制备样品的结构和形态特征。-TPR和FT-IR分析。结果表明，与本体相比，内消旋Co ₃ O ₄保留了小粒径，高表面积，丰富的表面吸附氧种类和低温还原性。这些特征使钒更好地分散在中观Co ₃ O ₄载体上。