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A new method of preparing anhydrous magnesium carbonate (MgCO3) under high pressure and its thermal property | |
Wen Liang; YuanYin; Luying Wang; Lin Chen; Heping Li | |
2017 | |
发表期刊 | Journal of Alloys and Compounds
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卷号 | 702页码:346-351 |
摘要 | By using magnesium carbonate tri-hydrates (MgCO3·3H2O) as starting material, anhydrous magnesium carbonate (MgCO3) was successfully synthesized by dehydration method under high pressure for the first time. The property of as-synthesized sample was investigated by powder X-ray diffraction (XRD) and Raman spectroscopy, respectively. The high pressure synthesis was performed at the various conditions to ensure that the optimal condition is 3 GPa and 800 °C for 1 h, and it is reasonable to explain the principle of MgCO3 synthesis under high pressure. The size of micro-particles observed from Scanning Electron Microscope (SEM) image exceeds to 100 μm. As a good and important flame retardantmaterial, its thermal property is investigated by Thermogravimetric (TG) analysis, Differential Scanning Calorimeter (DSC) measurement and high temperature X-ray diffraction (XRD) refinement, and the endothermic heat (128.59 KJ/mol), the thermal expansion coefficient along c-axis (αc = 1.639 × 10−5/°C), the thermal expansion coefficient along the a-axis (αa = 4.632 × 10−6/°C) and the volume thermal expansion coefficient (αV = 2.576 × 10−5/°C) was quantified. |
关键词 | Anhydrous Magnesium Carbonate (Mgco3) High Pressure Synthesis Thermal Expansion Coefficient |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.gyig.ac.cn/handle/42920512-1/8359 |
专题 | 地球内部物质高温高压实验室 |
作者单位 | 1.Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China 2.University of Chinese Academy of Sciences, Beijing, 100049, China |
推荐引用方式 GB/T 7714 | Wen Liang;YuanYin;Luying Wang;Lin Chen;Heping Li. A new method of preparing anhydrous magnesium carbonate (MgCO3) under high pressure and its thermal property[J]. Journal of Alloys and Compounds,2017,702:346-351. |
APA | Wen Liang;YuanYin;Luying Wang;Lin Chen;Heping Li.(2017).A new method of preparing anhydrous magnesium carbonate (MgCO3) under high pressure and its thermal property.Journal of Alloys and Compounds,702,346-351. |
MLA | Wen Liang;YuanYin;Luying Wang;Lin Chen;Heping Li."A new method of preparing anhydrous magnesium carbonate (MgCO3) under high pressure and its thermal property".Journal of Alloys and Compounds 702(2017):346-351. |
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A new method of prep(1469KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 |
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