High-concentration ε-Al13 nanoclusters sol prepared by chemical synthesis and membrane distillation concentration process
High-concentration ε-Al13 nanoclusters sol prepared by chemical synthesis and membrane distillation concentration process
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DOI：
10.1016/j.seppur.2009.07.001
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发表时间：
2009-09-30
影响因子：
8.6
通讯作者：
Luan, ZhaoKun
中科院分区：
文献类型：
--
作者：
Guo, YuJie;Li, GuoTing;Luan, ZhaoKun
ε-Al-13（AlO 4 Al 1 - 2（OH）（24）（H2O）（1 - 2）（7+））是具有1-2 nm尺寸的铝多氧位的十三聚体聚合物。通过化学合成和膜蒸馏浓缩工艺制备了高浓度ε-Al-13（总Al浓度为2.0M）的溶胶。最终溶胶中的ε-Al-13或Al-b含量受合成溶胶的pH的高度影响。随着MD的进行，所合成的溶胶的pH增加，并且Al-c或Al-30分解成属于Al-b而不是ε-Al-13的低聚物。因此，Alb的含量增加，但ε-Al-13的含量保持不变。(C)2009 Elsevier B. V.保留所有权利。
epsilon-Al-13 (AlO4Al12(OH)(24)(H2O)(12)(7+)) is a tridecameric polymer with a 1-2 nm-sized aluminum polyoxocation. The sol with a high concentration of 80% epsilon-Al-13 (2.0 M total Al concentration) is prepared by use of chemical synthesis and membrane distillation (MD) concentration process. The epsilon-Al-13 or Al-b content in the final sol is highly influenced by the pH of the synthesized sol. As the MD proceeds, the pH of the synthesized sol increases and Al-c or Al-30 decomposes into oligomers which belong to Al-b but not epsilon-Al-13. Therefore, the content of Alb increases but the content of epsilon-Al-13 remains constant. (C) 2009 Elsevier B.V. All rights reserved.