| Characteristics and formation of [AlO_4Al_(12)(OH)_(24)(H_2O)_(12)]~(7+) in electrolysis process |
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| 作者姓名： | 刘会娟 曲久辉 张素娟 胡承志 |
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| 作者单位： | LIU Huijuan QU Jiuhui ZHANG Sujuan& HU ChengzhiState Key Laboratory of Environmental Aquatic Chemistry，Research Center for Eco-Environmental Sciences，Chinese Academy of Sciences，Beijing 100085，China |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China (Grant No. 50108016). |
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| 摘 要： | AlO4Al12(OH)24(H2O)12] + (Al13) formation in electrolysis process is studied. The results detected by27Al NMR spectroscopy show that high content of Al13 polymer is formed in the partially hydrolyzed aluminum solution prepared by controlled electrolysis process. In the produced electrolyte of total Al concentration (AlT]) 2.0 mol · L-1 with a basicity (B = OH/Al molar ratios) of 2.0, the content of Al13 polymer is over 60% of total Al. Dynamic light scattering shows that the size distribution of the final electrolyte solutions (AlT] = 2.0 mol · L-1) is trimodal with B = 2.0 and bimodal with B = 2.5. The aggregates of Al13 complexes increase the particle size of partially hydrolyzed aluminum solution.
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Characteristics and formation of [AlO4Al12(OH)24(H2O)12]7+ in electrolysis process |
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| LIU Huijuan QU Jiuhui ZHANG Sujuan& HU ChengzhiState Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing ,China.Characteristics and formation of [AlO_4Al_(12)(OH)_(24)(H_2O)_(12)]~(7+) in electrolysis process[J].Science in China(Chemistry),2002,45(5). |
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| Authors: | LIU Huijuan QU Jiuhui ZHANG Sujuan& HU ChengzhiState Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing China |
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| Institution: | State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China |
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| Abstract: | AlO4Al12(OH)24(H2O)12]7+(Al13) formation in electrolysis process is studied. The results detected by 27Al NMR spectroscopy show that high content of Al13 polymer is formed in the partially hydrolyzed aluminum solution prepared by controlled electrolysis process. In the produced electrolyte of total Al concentration (Al) 2.0 mol* L-1 with a basicity (B = OH/Al molar ratios) of 2.0, the content of Al13 polymer is over 60% of total Al. Dynamic light scattering shows that the size distribution of the final electrolyte solutions ( = 2.0 mol*L-1) is trimodal with B = 2.0 and bimodal with B = 2.5. The aggregates of Al13 complexes increase the particle size of partially hydrolyzed aluminum solution. |
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| Keywords: | electrolysis process partially hydrolyzed aluminum solution Al13 polymer size distribution 27Al NMR spec-troscopy dynamic light scattering |
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