Alumina Hydrate Polymorphism Control in Al-Water Reaction Crystallization by Seeding to Change the Metastable Zone Width
文献类型：期刊论文
| 作者 | Wang, Hongqi1,2; Wang, Zhi1; Liu, Ling1,2; Gong, Xuzhong1; Wang, Mingyong1 |
| 刊名 | CRYSTAL GROWTH & DESIGN
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 16期号:2页码:1056-1062 |
| 关键词 | AB-INITIO GIBBSITE BAYERITE NUCLEATION STABILITY HYDROXIDE SOLVENT |
| ISSN号 | 1528-7483 |
| 通讯作者 | Wang, Z (reprint author), Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China. |
| 英文摘要 | The polymorph of alumina hydrate from Al-H2O reaction crystallization is hard to control due to its complexity. In this study, seeding is adopted to control the polymorphism by changing the metastable zone width (MSZW) which provides the easiest way to quantify the system stability. First, the influence of seed amount on the MSZW and polymorph was investigated. The MSZW declines with the increase of seed loading, and the critical seed loading for obtaining single gibbsite phase products is determined to be 15 g/L. Then the effect of seeding time on the polymorph indicates that the seed should be added before nucleation occurrence in order to control polymorphism effectively. The MSZW and polymorph of both seed-free and seeded Al-H2O reaction crystallization is controlled by changing the temperature and alkali concentration. It is found that if the critical concentration is lower than the saturation solubility curve of bayerite in the diagram, single gibbsite phase crystals can be obtained. Besides, the mechanism for polymorph control by changing the MSZW mainly includes the epitaxial growth and secondary nucleation which dominates the process under 90 and 60 degrees C, respectively. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 学科主题 | Chemistry, Multidisciplinary ; Crystallography ; Materials Science, Multidisciplinary ; Chemistry ; Crystallography ; Materials Science |
| 类目[WOS] | Chemistry, Multidisciplinary ; Crystallography ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Chemistry ; Crystallography ; Materials Science |
| 关键词[WOS] | AB-INITIO ; GIBBSITE ; BAYERITE ; NUCLEATION ; STABILITY ; HYDROXIDE ; SOLVENT |
| 收录类别 | SCI |
| 原文出处 | AMER CHEMICAL SOC |
| 语种 | 英语 |
| WOS记录号 | WOS:000369773300060 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/20668]  |
| 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, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Hongqi,Wang, Zhi,Liu, Ling,et al. Alumina Hydrate Polymorphism Control in Al-Water Reaction Crystallization by Seeding to Change the Metastable Zone Width[J]. CRYSTAL GROWTH & DESIGN,2016,16(2):1056-1062. |
| APA | Wang, Hongqi,Wang, Zhi,Liu, Ling,Gong, Xuzhong,&Wang, Mingyong.(2016).Alumina Hydrate Polymorphism Control in Al-Water Reaction Crystallization by Seeding to Change the Metastable Zone Width.CRYSTAL GROWTH & DESIGN,16(2),1056-1062. |
| MLA | Wang, Hongqi,et al."Alumina Hydrate Polymorphism Control in Al-Water Reaction Crystallization by Seeding to Change the Metastable Zone Width".CRYSTAL GROWTH & DESIGN 16.2(2016):1056-1062. |
入库方式： OAI收割
来源：过程工程研究所
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