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新型假冠醚聚合物的合成与对金属离子的吸附特性
Synthesis and Adsoption Property for Metal Ion of Polymeric Pseudo-Crown Ether
【摘要】 合成了 2种新型聚合物假冠醚 ,研究了聚合物对金属离子的静态吸附特性。结果表明 ,在 2 5℃时聚合物对Ag+、Hg2 +和Pb2 +的浓度分别为 0 0 4 3 0、0 0 4 0 1和 0 0 4 1 6mol/L时的吸附容量分别为 1 0 0 6、0 91 9和 0 65 8mmol/g。对Ag+的吸附伴随明显的氧化还原反应。聚合物及其与Ag+的配合物的红外光谱表明 ,在吸附聚合物中冠醚氧原子和苄醇氧原子皆参与了配位
【Abstract】 Two novel polymeric pseudo-crown ethers were synthesized by three simple reactions. Their adsorption properties for metal ions were studied. The results showed that at 25 ℃ the polymers exhibited adsorption capacities for Ag +,Hg 2+ and Pb 2+ respectively of 1.006,0.919 and 0.658 mmol/g, when the ion concentration was 0.043 0,0.040 1 and 0.041 6 mol/L, respectively. There occurred an obvious oxidation- reduction course of adsorption of Ag +. The structures of the polymers and its complex with Ag + were studied by FTIR spectra. The adsorption appeared to be a result of chelated chain formation between oxygen of crown ether and benzylalcohol with metal ions.
【Key words】 polymeric pseudo-crown ether; synthesis; metal ions; adsorption property;
- 【文献出处】 应用化学 ,Chinese Journal of Applied Chemistry , 编辑部邮箱 ,2003年02期
- 【分类号】O647.3
- 【被引频次】3
- 【下载频次】134