KINETICS OF BOEHMITE PRECIPITATION FROM SUPERSATURATED SODIUM ALUMINATE SOLUTIONS WITH ETHANOL-WATER SOLVENT
文献类型：会议论文
| 作者 | Wang, Z. ; Xu, R. G. ; Yang, L. ; Guo, Z. C. |
| 出版日期 | 2012 |
| 会议名称 | Symposium on Light Metals / TMS Annual Meeting and Exhibition |
| 会议日期 | MAR 11-15, 2012 |
| 会议地点 | Orlando, FL |
| 关键词 | Sodium aluminate solution Ethanol-water solvent Precipitation Boehmite Gibbsite GIBBSITE CRYSTALLIZATION INHIBITION AGGLOMERATION |
| 页码 | 119-124 |
| 中文摘要 | Boehmite was prepared from supersaturated sodium aluminates solutions with ethanol-water solvent. The results of thermogravimetric analyzer and XRD showed that the product was mixture of boehmite and gibbsite, and the mass ratio of gibbiste and boehmite varied greatly with different process conditions. This work presents the effects of mass ratio of ethanol and temperature on the precipitation rate and phase compositions of alumina hydrate. The ratio of AlOOH in the product increased significantly with the increase of mass ratio of ethanol because the precipitation of gibbsite was restrained. When the solvent was pure ethanol, the ratio of AlOOH in the product reaches the peak of 90%. Ethanol reduces the free caustic concentration and increases initial supersaturation coefficient significantly. The boehmite activation energy of precipitation in ethanol solvent was 13.7 kJ/mol, indicated that ethanol reduces effectively energy barrier of boehmite from sodium aluminate solutions and it was controlled by diffusion process. |
| 收录类别 | CPCI |
| 会议网址 | |
| 会议录 | Light Metals 2012
 |
| 语种 | 英语 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/11246]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 推荐引用方式 GB/T 7714 |
Wang, Z.,Xu, R. G.,Yang, L.,et al. KINETICS OF BOEHMITE PRECIPITATION FROM SUPERSATURATED SODIUM ALUMINATE SOLUTIONS WITH ETHANOL-WATER SOLVENT[C]. 见:Symposium on Light Metals / TMS Annual Meeting and Exhibition. Orlando, FL. MAR 11-15, 2012. |
入库方式： OAI收割
来源：过程工程研究所
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