| 锰氧化物的制备及其催化氧化性能研究 |
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| 引用本文： | 李赛,芦佳,吴银素,马子川. 锰氧化物的制备及其催化氧化性能研究[J]. 河北师范大学学报(自然科学版), 2012, 36(2): 159-164,191 |
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| 作者姓名： | 李赛 芦佳 吴银素 马子川 |
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| 作者单位： | 河北师范大学化学与材料科学学院,河北石家庄,050024 |
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| 基金项目： | 国家自然科学基金(21147004,20977024);河北师范大学重点科研基金(L2010Z06),河北师范大学学术科技创新项目(CG201135211111) |
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| 摘 要： | 采用氧化还原沉淀法和水热法等分别制备α-,β-,γ-,δ-MnO2,Mn2O3和Mn3O4.考察了锰氧化物的种类和晶型对邻二甲苯深度催化氧化性能的影响.研究发现,4种晶型MnO2的催化氧化活性顺序为δ-≈α->γ->β-MnO2,α-MnO2可在260℃将邻二甲苯完全分解.通过X射线衍射、扫描电子显微镜和比表面分析仪对催化剂进行了表征.
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| 关 键 词： | 锰氧化物 邻二甲苯 深度催化氧化 α-,β-,γ-,δ-MnO2 |
Study on the Preparation of Manganese Oxides and Their Catalytic Oxidation Properties |
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| LI Sai , LU Jia , WU Yinsu , MA Zichuan. Study on the Preparation of Manganese Oxides and Their Catalytic Oxidation Properties[J]. Journal of Hebei Normal University, 2012, 36(2): 159-164,191 |
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| Authors: | LI Sai LU Jia WU Yinsu MA Zichuan |
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| Affiliation: | (College of Chemistry and Material Science,Hebei Normal University,Hebei Shijiazhuang 050024,China) |
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| Abstract: | α-,β-,γ-,δ-MnO2,Mn2O3 and Mn3O4 were prepared through redox-precipitation and hydrothermal routes.The influences of manganese oxidesi’s species and crystal forms on their catalytic activities for complete catalytic oxidation of o-xylene were examined.The catalytic activities of MnOx is in the following sequence:δ-≈α->γ->β-MnO2.The conversion of o-xylene was 100 % at 260 ℃ over α-MnO2.X-ray diffraction,field emission scanning electron microscope and BET measurement were used to characterize the catalysts. |
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| Keywords: | manganese oxides o-xylene complete catalytic oxidation α-,β-,γ-,δ-MnO2 |
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