Controlled precipitation of nesquehonite (MgCO3 center dot 3H(2)O) by the reaction of MgCl2 with (NH4)(2)CO3
文献类型：期刊论文
| 作者 | Wang, Yong1; Li, Zhibao1; Demopoulos, George P.2 |
| 刊名 | JOURNAL OF CRYSTAL GROWTH
 |
| 出版日期 | 2008-03-15 |
| 卷号 | 310期号:6页码:1220-1227 |
| 关键词 | crystal morphology surface structure X-ray diffraction growth from solutions nesquehonite |
| ISSN号 | 0022-0248 |
| 其他题名 | J. Cryst. Growth |
| 中文摘要 | In this study, homogeneous (unseeded) precipitation of nesquehonite (MgCO3 center dot 3H(2)O)) by the reaction Of MgCl2 with (NH4)(2)CO3 in supersaturated solutions was investigated. Factors that influence the precipitation Of MgCO3 center dot 3H(2)O, such as reaction temperature, initial concentration, stirring speed, titration speed, equilibration time, have been studied. SEM images and particle size distribution show that the temperature, initial concentration and titration speed have significant effect on nesquehonite's crystal morphology and particle size. In addition, stirring speed and equilibration time also have some influence on its properties. X-ray powder diffraction (XRD) results show that the obtained crystals compositions are greatly affected by the reaction temperature. With the morphological transformation, their corresponding composition also change from MgCO3 center dot xH(2)O to Mg-5(CO3)(4)(OH)(2 center dot)4H(2)O in the interval of 288-333K. With the optimization of operating conditions, the crystals can grow up to a length of about 40 mu m and a width of 5 mu m, indicating good filtration properties. High-purity nesquehonite obtained in this study was calcined to produce highly pure MgO at 1073 K as shown by XRD results. (c) 2008 Elsevier B.V. All rights reserved. |
| 英文摘要 | In this study, homogeneous (unseeded) precipitation of nesquehonite (MgCO3 center dot 3H(2)O)) by the reaction Of MgCl2 with (NH4)(2)CO3 in supersaturated solutions was investigated. Factors that influence the precipitation Of MgCO3 center dot 3H(2)O, such as reaction temperature, initial concentration, stirring speed, titration speed, equilibration time, have been studied. SEM images and particle size distribution show that the temperature, initial concentration and titration speed have significant effect on nesquehonite's crystal morphology and particle size. In addition, stirring speed and equilibration time also have some influence on its properties. X-ray powder diffraction (XRD) results show that the obtained crystals compositions are greatly affected by the reaction temperature. With the morphological transformation, their corresponding composition also change from MgCO3 center dot xH(2)O to Mg-5(CO3)(4)(OH)(2 center dot)4H(2)O in the interval of 288-333K. With the optimization of operating conditions, the crystals can grow up to a length of about 40 mu m and a width of 5 mu m, indicating good filtration properties. High-purity nesquehonite obtained in this study was calcined to produce highly pure MgO at 1073 K as shown by XRD results. (c) 2008 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Crystallography ; Materials Science, Multidisciplinary ; Physics, Applied |
| 研究领域[WOS] | Crystallography ; Materials Science ; Physics |
| 关键词[WOS] | MAGNESIUM CARBONATE ; SHAPE EVOLUTION ; CALCIUM ; GROWTH ; SYSTEM |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000254814000030 |
| 公开日期 | 2013-10-08 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/2875]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Lab Green Proc & Engn, Beijing 100080, Peoples R China 2.McGill Univ, Dept Min, Montreal, PQ H3A 2B2, Canada |
| 推荐引用方式 GB/T 7714 | Wang, Yong,Li, Zhibao,Demopoulos, George P.. Controlled precipitation of nesquehonite (MgCO3 center dot 3H(2)O) by the reaction of MgCl2 with (NH4)(2)CO3[J]. JOURNAL OF CRYSTAL GROWTH,2008,310(6):1220-1227. |
| APA | Wang, Yong,Li, Zhibao,&Demopoulos, George P..(2008).Controlled precipitation of nesquehonite (MgCO3 center dot 3H(2)O) by the reaction of MgCl2 with (NH4)(2)CO3.JOURNAL OF CRYSTAL GROWTH,310(6),1220-1227. |
| MLA | Wang, Yong,et al."Controlled precipitation of nesquehonite (MgCO3 center dot 3H(2)O) by the reaction of MgCl2 with (NH4)(2)CO3".JOURNAL OF CRYSTAL GROWTH 310.6(2008):1220-1227. |
入库方式： OAI收割
来源：过程工程研究所
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