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采用自牺牲模板法制得了多孔MnCo_2O_(4.5)。即以硫酸钴和硫酸锰为原料,草酸为沉淀剂,通过水热技术预先合成出板块状草酸盐前驱体,继而将前驱体进行焙烧以脱除CO_2和H_2O,从而原位得到良好保持板块状形貌的多孔MnCo_2O_(4.5)。利用X射线衍射(XRD)、热重(TG)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和N_2吸附-脱附等手段对样品的物相、热分解行为、形貌及孔结构进行了表征。借助差示扫描量热(DSC)技术评价了多孔MnCo_2O_(4.5)对AP的热分解催化性能。结果表明,多孔MnCo_2O_(4.5)对AP热分解过程具有良好的催化活性,添加2%(质量分数)的MnCo_2O_(4.5)可使AP的高温分解峰值温度降低128℃,表观分解热提高557 J/g。
Porous MnCo 2 O 4 (4.5) was prepared from the sacrificial template method. That is, cobalt sulfate and manganese sulfate are used as raw materials, and oxalic acid is used as a precipitating agent. Plate-shaped oxalate precursors are synthesized in advance by hydrothermal technology, and then the precursors are roasted to remove CO 2 and H 2 O so as to obtain a good holding plate in situ Morphology of Porous MnCo_2O_ (4.5). The phase, thermal decomposition behavior, morphology and pore structure of the samples were characterized by X-ray diffraction (XRD), thermogravimetry (TG), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and N 2 adsorption- Characterized. The thermal decomposition catalytic performance of porous MnCo 2 O 4 (4.5) on AP was evaluated by differential scanning calorimetry (DSC). The results showed that porous MnCo 2 O 4 (4.5) has good catalytic activity for thermal decomposition of AP. Adding 2% (wt) MnCo 2 O 4 (4.5) reduced the peak temperature of pyrolysis of AP by 128 ℃ and apparent decomposition heat by 557 J / g.