An innovative approach for pseudoboehmite precipitation from seeded sodium aluminate solutions
文献类型：期刊论文
| 作者 | Cai, Weiquan1; Li, Huiquan2; Zhang, Guangxu1 |
| 刊名 | JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
 |
| 出版日期 | 2010-04-01 |
| 卷号 | 71期号:4页码:515-518 |
| 关键词 | Inorganic compounds Chemical synthesis X-ray diffraction Crystal structure |
| ISSN号 | 0022-3697 |
| 通讯作者 | Cai, WQ |
| 英文摘要 | Precipitation of boehmite from seeded sodium aluminate (SA) solutions for production of smelter grade alumina by calcination is in the early stage of development. However, the reported boehmites are usually well crystallized and actually most boehmites for activated aluminas are poorly crystallized and less ordered forms, which is also called pseudoboehmite. In the present study, an attempt has been made to find the appropriate precipitation conditions of pseudoboehmite from seeded SA solutions by inductively coupled plasma optical emission spectrometry (ICP-OES), X-ray diffraction (XRD), and transmission electron microscopy (TEM). It was found that pure pseudoboehmite showing minor morphology difference with the pseudoboehmite seed can be easily obtained under hydrothermal conditions at 373 K not less than 10 h or at 398 K not less than 3 h. The hydrothermal seed precipitation is a dynamic inhibited process that approximately consists of three stages, namely a fast precipitation stage, a slow precipitation stage and an analogously apparent equilibrium stage. However, the seeded precipitation under circulation reflux at approximate 0.1 MPa is not suitable for preparing pure pseudoboehmite because of by-products formation, such as gibbsite, nordstrandite, diaspore, etc. This work demonstrates that pseudoboehmite can be efficiently precipitated from seeded SA solutions under certain hydrothermal conditions. (C) 2009 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Multidisciplinary ; Physics, Condensed Matter |
| 研究领域[WOS] | Chemistry ; Physics |
| 关键词[WOS] | BOEHMITE ; LIQUOR ; AREA |
| 收录类别 | SCI ; ISTP |
| 语种 | 英语 |
| WOS记录号 | WOS:000277055400026 |
| 公开日期 | 2013-11-19 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6174]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Wuhan Univ Technol, Sch Chem Engn, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Weiquan,Li, Huiquan,Zhang, Guangxu. An innovative approach for pseudoboehmite precipitation from seeded sodium aluminate solutions[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,2010,71(4):515-518. |
| APA | Cai, Weiquan,Li, Huiquan,&Zhang, Guangxu.(2010).An innovative approach for pseudoboehmite precipitation from seeded sodium aluminate solutions.JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,71(4),515-518. |
| MLA | Cai, Weiquan,et al."An innovative approach for pseudoboehmite precipitation from seeded sodium aluminate solutions".JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 71.4(2010):515-518. |
入库方式： OAI收割
来源：过程工程研究所
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