将提锂吸附剂前驱体尖晶石型锰氧化物(Spinel-type manganese oxide,SMO) Li1.6-Mn1.6O4与聚氯乙烯(PVC)杂化,采用溶剂-非溶剂交换法成功制备了用于海水提锂的平板膜.该杂化膜用酸处理抽出其中的锂得到具有提锂性能的膜,对膜进行了一系列提锂性能测试.实验结果表明,酸洗处理后的膜对富锂溶液中锂的吸附约6h达平衡,最大吸附量为29 mg/g,之后采用0.5 mol/L HCl溶液脱锂约1h锂的脱出基本达到平衡,Li+的脱附率在95％左右,锰的溶损率在3.5％左右.该膜在含有Li+、Na+、K+、Mg2+、Ca2+离子的竞争吸附过程中对Li+表现出很好的选择性,同时重复实验也表明,这种提锂杂化膜具有很好的稳定性.
参考文献
| [1] | Grady H R .Lithium metal for the battery industry[J].Journal of Power Sources,1980,5(01):127-135. |
| [2] | Garrett D E.Lithium Handbook of Lithium and Natural Calcium Chloride[M].Oxford:Academic Press,2004:1-235. |
| [3] | Chen Y C;Kenneth J H.Exploitation of Lithium inBrines by Hsu's Method.Paradoxes in Geology[M].Amsterdam:Elsevier Science B.V,2001:421-428. |
| [4] | Shiu J Y;Lin J R;Lee D C et al.Method for adsorbing lithium ions from a lithium-containing aqueous solution by a granular adsorbent[P].US Patent:2003231996,2003. |
| [5] | Aya Umeno;Yoshitaka Miyai;Norio Takagi;Ramesh Chitrakar;Kohij Sakane;Kenta Ooi .Preparation and Adsorptive Properties of Membrane-Type Adsorbents for Lithium Recovery from Seawater[J].Industrial & Engineering Chemistry Research,2002(17):4281-4287. |
| [6] | Chung K S;Lee J C;Kim W K et al.Inorganic adsorbent containing polymeric membrane reservoir for the recovery of lithium from seawater[J].Journal of Membrane Science,2008,325:503-508. |
| [7] | Ramesh Chtrakar;Hirofumi Kanoh;Yoshitaka Miyai;Kenta Ooi .A New Type of Manganese Oxide (MnO_2·0.5H_2O) Derived from Li_1.6Mn_1.6O_4 and Its Lithium Ion-Sieve Properties[J].Chemistry of Materials,2000(10):3151-3157. |
| [8] | 纪志永,袁俊生,李鑫钢.锂吸附剂的合成及其吸附性能[J].化学工程,2007(08):9-13. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%