AN IN SITU KINETIC STUDY OF THE DEHYDRATION OF BRUCITE USING SYNCHROTRON X-RAY POWDER DIFFRACTION
文献类型：期刊论文
| 作者 | Liu, CJ; Zhang, RX; Shen, KW; Liu, T; Wen, W; Wang, DJ |
| 刊名 | CANADIAN MINERALOGIST
 |
| 出版日期 | 2018 |
| 卷号 | 56期号:1页码:101-108 |
| 关键词 | THERMAL-DECOMPOSITION MG(OH)(2) DEHYDROXYLATION PHASE-CHANGE MECHANISM |
| ISSN号 | 0008-4476 |
| DOI | 10.3749/canmin.1700052 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The dehydration kinetics of brucite were studied in situ by synchrotron X-ray powder diffraction (XRPD) in the temperature range 320-370 degrees C. The sequence of XRD spectra clearly reveals that the phase transformation of brucite into periclase occurs with increasing temperature up to 600 degrees C under ambient pressure. Our results show that there is a positive temperature dependence of the reaction rate k. Elevated temperatures will be conducive to the dehydration process. The obtained n values suggest that the reaction mechanism is a one-dimensional diffusion of the water molecules with an instantaneous nucleation. The influence of temperature on the reaction rate is well described by the Arrhenius equation, which yields an apparent activation energy E-a of 386 +/- 12 kJ/mol and frequency factor A of 1.14 x 10(29) s(-1). The activation energy is influenced by factors such as grain size, shape, temperature, gas atmosphere, and surrounding water. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/30839]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.China Earthquake Adm, Inst Earthquake Sci, Beijing 100036, Peoples R China 2.Univ Chinese Acad Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, CJ,Zhang, RX,Shen, KW,et al. AN IN SITU KINETIC STUDY OF THE DEHYDRATION OF BRUCITE USING SYNCHROTRON X-RAY POWDER DIFFRACTION[J]. CANADIAN MINERALOGIST,2018,56(1):101-108. |
| APA | Liu, CJ,Zhang, RX,Shen, KW,Liu, T,Wen, W,&Wang, DJ.(2018).AN IN SITU KINETIC STUDY OF THE DEHYDRATION OF BRUCITE USING SYNCHROTRON X-RAY POWDER DIFFRACTION.CANADIAN MINERALOGIST,56(1),101-108. |
| MLA | Liu, CJ,et al."AN IN SITU KINETIC STUDY OF THE DEHYDRATION OF BRUCITE USING SYNCHROTRON X-RAY POWDER DIFFRACTION".CANADIAN MINERALOGIST 56.1(2018):101-108. |
入库方式： OAI收割
来源：上海应用物理研究所
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