| Hydrolyzed Al(III)-clusters. II: Speciation transformation and stability of Al-13 aggregates | |
| Bi, Zhe; Chen, Youjun; Wang, Shuifeng; Wang, Dongsheng | |
| 2014 | |
| 会议名称 | 10th International Symposium on Electrokinetic Phenomena (ELKIN) |
| 会议日期 | MAY 20-24, 2012 |
| 会议地点 | Univ Tsukuba, Tsukuba, JAPAN |
| 关键词 | Nano-Al-13 Clusters Inorganic polymer flocculant Speciation stability |
| 英文摘要 | Pure nano-Al-13 and aggregates at various concentrations were prepared to examine their stability and potential role in coagulation processes and natural systems. Alkalinity titration experiments showed that the hydrolysis of Al-13 solutions exhibits significant difference from that of the normal Al(III) solutions. The transition OH/Al ratio (pH points) shifts from normal 2.5 to higher values (similar to 2.9). No significant structural rearrangement takes place during Al-13 aggregation. The aggregates exhibit stability during short aging up to 1 month. The Al-b species obtained by Ferron assay in the initial aging period no longer corresponds to Al-13. The aggregates disappear quickly in Al-27-NMR detection with increasing B value (OH/AI ratio) maintaining efficient Ferron reactivity. This shows that the Al-b in Ferron assay corresponds with Al-13 only under certain conditions. (C) 2012 Elsevier B.V. All rights reserved. |
| ISSN号 | 0927-7757 |
| 内容类型 | 会议论文 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24571]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Bi, Zhe; Chen, Youjun; Wang, Shuifeng; Wang, Dongsheng. Hydrolyzed Al(III)-clusters. II: Speciation transformation and stability of Al-13 aggregates[C]. 见:10th International Symposium on Electrokinetic Phenomena (ELKIN). Univ Tsukuba, Tsukuba, JAPAN. MAY 20-24, 2012. |
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