| Mn3O4的溶剂热法制备及晶粒生长动力学研究 |
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| 引用本文： | 唐爱东,黄可龙.Mn3O4的溶剂热法制备及晶粒生长动力学研究[J].无机化学学报,2005,21(6):929-932. |
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| 作者姓名： | 唐爱东 黄可龙 |
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| 作者单位： | 中南大学化学化工学院功能材料化学研究所,长沙,410083 |
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| 基金项目： | 国家自然科学基金资助项目(No.20376086)。 |
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| 摘 要： | 非化学计量M n3O4-δ由八面体的M n2O3-δ相与四面体的M nO相组成,结构中的氧空位是其催化活性中心1]。M n3O4-δ用途广泛,其高催化活性可用于环保领域分解去除废气中的CO、N2O、NO与NH3等气体或从废气中去除有机物等2~4],高纯四方相M n3O4-δ纳米晶适用于制作软磁性材料如高
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| 关 键 词： | 四氧化三锰 溶剂热法 制备 纳米晶 动力学 活化能 晶粒生长 |
| 文章编号： | 1001-4861(2005)06-0929-04 |
| 收稿时间： | 2004/11/15 0:00:00 |
| 修稿时间： | 2005/2/21 0:00:00 |
Mn3O4: Solvo-thermal Synthesis and Crystallization Kinetics |
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| TANG Ai-Dong and HUANG Ke-Long.Mn3O4: Solvo-thermal Synthesis and Crystallization Kinetics[J].Chinese Journal of Inorganic Chemistry,2005,21(6):929-932. |
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| Authors: | TANG Ai-Dong and HUANG Ke-Long |
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| Institution: | Institute of Functional Material Chemistry, School of Chemistry & Chemical Engineering, Central South University, Changsha 410083 and Institute of Functional Material Chemistry, School of Chemistry & Chemical Engineering, Central South University, Changsha 410083 |
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| Abstract: | Nanocrystalline Trimanganese tetroxide (Mn3O4) was synthesized by solvothermal reaction of MnO2 and C2H5OH. The dependence of the Mn3O4 nanoparticle size on synthesis temperature was investigated using X-ray diffraction (XRD) technique. The mechanism for the nanocrystallite growth was also studied. The results indicate that the prepared Mn3O4 has a nanocrystalline structure with XRD average crystal size varing from 54 to 70 nm depending on the synthesis temperature. The activation energy for the nanocrystallite growth was calculated to be 11.36 kJ·mol-1 according to the kinetic theory of nanocrystallite growth, indicating that Mn3O4 nanocrystallite grows primarily by means of an interfacial reaction during the solvothermal process. |
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| Keywords: | trimanganese tetroxide (Mn3O4) solvothermal method nanocrystallites kinetics activation energy |
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