| 多孔尖晶石型锰钴氧化物的制备和催化性能 |
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| 引用本文： | 石凤娟,曹清贻,陈亚容,黄春晓,段学军.多孔尖晶石型锰钴氧化物的制备和催化性能[J].实验室研究与探索,2021(2):54-57,70. |
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| 作者姓名： | 石凤娟 曹清贻 陈亚容 黄春晓 段学军 |
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| 作者单位： | 中原工学院能源与环境学院 |
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| 基金项目： | 河南省基础与前沿技术研究计划项目(162300410024);河南省高等教育教学改革研究项目(2019SJGLX332);河南省高等学校大学生创新训练计划重点项目(S201810465032)。 |
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| 摘 要： | 为获得高效催化还原对硝基苯酚的锰钴氧化物催化剂,以聚甲基丙烯酸甲酯为模板,采用硬模板法制备了具有三维有序大孔结构的尖晶石型锰钴氧化物(MnCo2O4)。运用X射线粉末衍射仪、全自动物理吸附仪、扫描电子显微镜及紫外-可见分光光度计等对催化剂的结构和形貌进行表征,并研究其对硼氢化钠还原对硝基苯酚反应的催化性能。结果表明,多孔MnCo2O4催化剂具有立方晶相结构,其三维有序大孔孔径均一,比表面积达到65.7 m2/g;与体相MnCo2O4和其他贵金属催化剂相比,多孔MnCo2O4催化剂表现出更优异的催化活性,对硝基苯酚还原的反应速率常数可达6.59×10-2s-1。多孔MnCo2O4催化剂在5次重复利用后对硝基苯酚的转化率仍高达90%以上。
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| 关 键 词： | 硬模板法 三维有序介孔 钴锰氧化物 尖晶石型 对硝基苯酚 |
Synthesis and Catalytic Properties of the Porous Spinel Cobalt-manganese Oxide |
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| SHI Fengjuan,CAO Qingyi,CHEN Yarong,HUANG Chunxiao,DUAN Xuejun.Synthesis and Catalytic Properties of the Porous Spinel Cobalt-manganese Oxide[J].Laboratory Research and Exploration,2021(2):54-57,70. |
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| Authors: | SHI Fengjuan CAO Qingyi CHEN Yarong HUANG Chunxiao DUAN Xuejun |
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| Institution: | (School of Energy and Environment,Zhongyuan University of Technology,Zhengzhou 451191,China) |
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| Abstract: | In order to obtain high efficient cobalt-manganese oxide catalysts for the reduction of p-nitrophenol,spinel-type cobalt-manganese oxide catalyst with the three-dimensional ordered macroporous structure was synthesized using the polymethyl methacrylate hard-templating method.By X-ray powderdiffraction(XRD),Brunner?Emmet?Tellermeasurements(BET),scanning electron microscopy(SEM),and ultraviolet visible spectrophotometer(UV-Vis),the structure and morphology of the catalysts were characterized,and the catalyticperformances of the samples were evaluated for the reduction of p-nitrophenol by sodium borohydride(NaBH4).The results showed that the porous MnCo2O4 catalyst with the uniform macropore size and the surface area of 65.7 m2·g-1 possessed the cubic phase structure and exhibited more excellent catalytic performance than the bulk-MnCo2O4 and some noble metal catalysts for the reduction of p-nitrophenol with the reaction rate constant of 6.59×10-2 s-1.Moreover,the conversion rate of p-nitrophenol wasstill more than 90%after the porous MnCo2O4 catalyst was reused five times. |
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| Keywords: | hard-templating method three-dimensional ordered macropore cobalt-manganese oxide spinel-type p-nitrophenol |
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