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| 在聚甲基丙烯酸甲酯胶体晶体模板中填充硝酸锂、硝酸铝和醋酸锰的混合溶液制备出了结合铝的三维有序大孔锂锰氧化物LiAlMnO4。经过稀盐酸处理后获得了相应的新型锂离子筛HAlMnO4。实验表明其孔径和孔壁厚度分别为240 nm和52 nm左右，X-射线衍射峰归属于纯尖晶石相。在0.1 M HCl溶液中，锂离子的脱除率达到97%以上，而锰和铝的溶损由于铝对三价锰的替代、分别只有0.23%和0.45%。锂离子的最大吸附量为45.5 mg/g，达到了HAlMnO4理论吸附量的96.3%。与此同时锂离子的吸附速率明显加快，在与Na+、K+、Mg2+和Ca2+共存的溶液中吸附剂对Li+具有很高的选择性。 |
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zhouli5212(金币+10, 翻译EPI+1):谢谢 2010-04-16 19:32
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Aluminum-containing three-dimensional ordered macroporous lithium manganese oxide LiAlMnO4 was prepared by filling the mixture solution of lithium nitrate, aluminum nitrate and manganese acetate in the PMMA colloidal crystal template. The corresponding novel lithium ion-sieve HAlMnO4 was obtained after treatment with diluted hydrochloric acid. The experiment showed that the pore size and pore wall thickness was 240 nm and 52 nm, respectively and the x-ray diffraction peaks belonged to pure spinel. In the 0.1 M HCl solution, the removal rate of lithium ion was above 97% and the solution loss of manganese and aluminum was only 0.23% and 0.45%, respectively, due to the substitution of manganese (III) by aluminum. The maximum adsorption of lithium ion was 45.5 mg/g, achieving 96.3% of the theoretical adsorption of HAlMnO4. Meanwhile, the adsorption rate of lithium ion was significantly accelerated and the adsorbent had a very high selectivity on Li+ in the solution where Na+, K+, Mg2+ and Ca2+ were also present. 非业内人士。请仔细查看专业术语：） |
2楼2010-04-15 00:59:03
benmao_mogu
铁杆木虫 (著名写手)
- 翻译EPI: 51
- 应助: 16 (小学生)
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- 虫号: 992763
- 注册: 2010-04-09
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- 专业: 化学反应工程
zhouli5212(金币+10):谢谢 2010-04-16 19:32
| The methyl methacrylate colloidal crystal templates filling nitric acid lithium manganese acetate, aluminum nitrate and the mixture preparation out of 3d combining aluminium -ordered macroporous LiAlMnO4 lithium manganese oxide. After rare hydrochloric acid treatment after new obtain corresponding HAlMnO4 lithium ionic sieve. Experiments show that the diameter and wall thickness holes for the law and 52 nm around 240 nm, X-ray diffraction peak belongs to pure spinel phase. In the solution of 0.1 M HCl in lithium ion of the removal rate reached 97%, and the loss of manganese and aluminum aluminum on three price because the only alternative, manganese and 0.23% 0.45%. The biggest lithium ion adsorption capacity for 45.5 mg/g, reached HAlMnO4 theory. The adsorption 96.3% Meanwhile lithium ion adsorption rate speed, and making +, K +, Mg2 Ca2 + + and solution of the coexistence of Li + sorbent high selectivity. |
3楼2010-04-15 15:10:07