A serial of Co₃O₄ catalysts were prepared through a facile method of calcining of ZIF-67 at different temperatures. Physicochemical properties of the samples were characterized by the powder X-ray diffraction (XRD), thermogravimetric analysis-differential thermal analysis(TGA-DTA), scanning electron microscopy(SEM), the Brunauer-Emmett-Teller(BET) equation, H₂ temperature-programmed reduction (H₂-TPR) and The X-ray photoelectron spectroscopy (XPS) techniques, and their catalytic performance were investigated for the oxidation of toluene. The structural characterization certified that the calcination temperature has an important effect to catalytic activities. With the increase of the calcination temperature, the BET surface area reduces, pore size increases and the ratio of Co³⁺/Co²⁺ and O_ads/O_latt firstly increase then decrease. The results showed that the conversion of toluene on the Co₃O₄-400 catalyst could reach 100 % when the reaction temperature was 240 ºC. The Co₃O₄-400 catalyst presented better performance and excellent resistance to H₂O, which are very important to Industrial application.

通过在不同温度下煅烧ZIF-67的简便方法，制备了一系列Co ₃ O ₄催化剂。通过粉末X射线衍射（XRD），热重分析-差热分析（​​TGA-DTA），扫描电子显微镜（SEM），Brunauer-Emmett-Teller（BET）方程，H ₂表征样品的理化性质。程序升温还原（H ₂-TPR）和X射线光电子能谱（XPS）技术，以及它们对甲苯氧化的催化性能进行了研究。结构表征证明煅烧温度对催化活性具有重要影响。随着焙烧温度的增加，BET表面积减小，孔径增加和Co的比例³⁺ / Co的²⁺和O_广告/ O _LATT先增大然后减小。结果表明，当反应温度为240ºC时，甲苯在Co ₃ O ₄ -400催化剂上的转化率可达到100％。钴₃ O ₄-400催化剂具有更好的性能和出色的抗H ₂ O性能，这对工业应用非常重要。