| XRD,TG,DSC和FTIR法研究碱式碳酸镁的热分解 |
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| 引用本文： | 秦志扬,秦麟卿,张联盟,黄志雄.XRD,TG,DSC和FTIR法研究碱式碳酸镁的热分解[J].非金属矿,2012,35(4):52-53. |
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| 作者姓名： | 秦志扬 秦麟卿 张联盟 黄志雄 |
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| 作者单位： | 1. 武汉理工大学材料复合新技术国家重点实验室,湖北武汉,430070
2. 武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070;武汉理工大学材料研究与测试中心,湖北武汉430070 |
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| 摘 要： | 使用X射线衍射仪(XRD)、热重分析仪(TG)、差示扫描量热仪(DSC)和傅里叶变换红外光谱仪(FTIR)研究了碱式碳酸镁的热分解。350℃时,碱式碳酸镁分解产物为非晶物质4MgCO3.Mg(OH)2。400℃时,非晶产物重结晶,生成了MgO和中间相Mg3O(CO3)2。450℃时,中间相Mg3O(CO3)2分解为MgO和CO2,给出了热解化学反应式。
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| 关 键 词： | 碱式碳酸镁 热分解 中间相 |
Study on the Thermal Decomposition of Basic Magnesium Carbonate by XRD, TG, DSC and FTIR |
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| Qin Zhiyang
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Qin Linqing
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Zhang Lianmeng
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Huang Zhixiong.Study on the Thermal Decomposition of Basic Magnesium Carbonate by XRD, TG, DSC and FTIR[J].Non-metallic Mines,2012,35(4):52-53. |
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| Authors: | Qin Zhiyang Qin Linqing Zhang Lianmeng Huang Zhixiong |
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| Affiliation: | 1(1 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan,Hubei 430070;2 Center for Material Research and Analysis,Wuhan University of Technology,Wuhan,Hubei 430070) |
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| Abstract: | The thermal decomposition of basic magnesium carbonate was investigated by X-ray diffractometry,thermogravimetry(TG),differential scanning calorimetry(DSC) and fourier transformed infrared spectroscopy(FTIR).The basic magnesium carbonate decomposed to amorphous material 4MgCO3.Mg(OH)2 at 350 ℃.MgO and intermediate phase Mg3O(CO3)2 were formed from the recrystallization of the amorphous product at 400 ℃.The intermediate phase undergoes decomposition on heating to give magnesium oxide and carbon dioxide at 450 ℃.The chemical reactions of thermal decomposition were given. |
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| Keywords: | basic magnesium carbonate thermal decomposition intermediate phase |
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