Effect of total aluminum concentration on the formation and transformation of nanosized Al-13 and Al-30 in hydrolytic polymeric aluminum aqueous solutions
文献类型：期刊论文
| 作者 | Chen, ZY; Liu, CJ; Luan, ZK; Zhang, ZG; Li, YZ; Jia, ZP |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2005 |
| 卷号 | 50期号:18页码:2010-2015 |
| 关键词 | hydrolytic polyaluminum nanosized Al-13 and Al-30 aluminum species distribution Al-27 NMR Keggin structure |
| 英文摘要 | Influence of total aluminum concentration (CAlT) on the generation and transformation of nanosized Al-13 and Al-30 in hydrolytic polyaluminum aqueous solutions was investigated using high field Al-27 NMR and time-developed Al-Ferron complex colorimetry. When prepared at the optimal basicity (B) of Al-13 generation and 80 degrees C, the Al-13 species in polyaluminum solution tends to further polymerize and convert to Al-30 and higher polymers when CAlT > 0.2 mol(.)L(-1), but Al-13 does not convert to Al-30 quantificationally, as the formation of Al-u from Al-13 and Al-30 is accelerated in the same way. The conversion rate of Al-13 is accelerated by the increase in CAlT. When CAlT > 0.75 mol(.)L(-1), Al-13 content decreases rapidly, and Al-30 content increases continuously and becomes the dominant nanometer polynuclear aluminum species. Al-m is one of prerequisites of Al-13 conversion to Al-30. When CAlT increases and B reduces, the polymerization rate between Al-13 and Al-m increases, and at the same time, the dissociation reaction rate of Al-13 and Al-30 by H+ also increases. The latter becomes the dominant reaction in polyaluminum solution with low B value, so Al-30 decreases with the increasing CAlT. The hydrolytic polyaluminum solution with Al-13 content beyond 80% can only be prepared under the condition of CAlT < 0.5 mol(.)L(-1) and optimal B value. |
| 学科主题 | Science & Technology - Other Topics |
| 研究领域[WOS] | Science & Technology - Other Topics |
| WOS记录号 | WOS:000233353700009 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23288]  |
| 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 | Chen, ZY,Liu, CJ,Luan, ZK,et al. Effect of total aluminum concentration on the formation and transformation of nanosized Al-13 and Al-30 in hydrolytic polymeric aluminum aqueous solutions[J]. CHINESE SCIENCE BULLETIN,2005,50(18):2010-2015. |
| APA | Chen, ZY,Liu, CJ,Luan, ZK,Zhang, ZG,Li, YZ,&Jia, ZP.(2005).Effect of total aluminum concentration on the formation and transformation of nanosized Al-13 and Al-30 in hydrolytic polymeric aluminum aqueous solutions.CHINESE SCIENCE BULLETIN,50(18),2010-2015. |
| MLA | Chen, ZY,et al."Effect of total aluminum concentration on the formation and transformation of nanosized Al-13 and Al-30 in hydrolytic polymeric aluminum aqueous solutions".CHINESE SCIENCE BULLETIN 50.18(2005):2010-2015. |
入库方式： OAI收割
来源：生态环境研究中心
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