Preparation of basic magnesium carbonate and its thermal decomposition kinetics in air
文献类型：期刊论文
| 作者 | Liu Xin-wei1,2; Feng Ya-li1; Li Hao-ran2 |
| 刊名 | JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY
 |
| 出版日期 | 2011-12-01 |
| 卷号 | 18期号:6页码:1865-1870 |
| 关键词 | basic magnesium carbonate TG-DTG thermal decomposition kinetics mechanism function |
| ISSN号 | 1005-9784 |
| 通讯作者 | Feng, YL |
| 英文摘要 | The thermal decomposition process of basic magnesium carbonate was investigated. Firstly, Basic magnesium carbonate was prepared from magnesite, and the characteristics of the product were detected by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Subsequently, the thermal decomposition process of basic magnesium carbonate in air was studied by thermogravimetry-differential thermogravimetry (TG-DTG). The results of XRD confirm that the chemical composition of basic magnesium carbonate is 4MgCO(3)center dot Mg(OH)(2)center dot 4H(2)O. And the SEM images show that the sample is in sheet structure, with a diameter of 0.1-1 mu m. The TG-DTG results demonstrate that there are two steps in the thermal decomposition process of basic magnesium carbonate. The apparent activation energies (E) were calculated by Flynn-Wall-Ozawa method. It is obtained from Coats-Redfern's equation and Malek method that the mechanism functions of the two decomposition stages are D3 and A1.5, respectively. And then, the kinetic equations of the two steps were deduced as well. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | ACETATE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000297734500015 |
| 公开日期 | 2013-10-29 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4348]  |
| 专题 | 过程工程研究所_生化工程国家重点实验室 |
| 作者单位 | 1.Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Key State Lab Biochem Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Xin-wei,Feng Ya-li,Li Hao-ran. Preparation of basic magnesium carbonate and its thermal decomposition kinetics in air[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY,2011,18(6):1865-1870. |
| APA | Liu Xin-wei,Feng Ya-li,&Li Hao-ran.(2011).Preparation of basic magnesium carbonate and its thermal decomposition kinetics in air.JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY,18(6),1865-1870. |
| MLA | Liu Xin-wei,et al."Preparation of basic magnesium carbonate and its thermal decomposition kinetics in air".JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY 18.6(2011):1865-1870. |
入库方式： OAI收割
来源：过程工程研究所
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