| 壳聚糖/Pb(Ⅱ)模板壳聚糖膜与Pb(Ⅱ)螯合反应的动力学及机理探讨 |
| Studies on Kinetics and Mechanism of Chelating Reaction between Chitosan,Chitosan Membrane with Pb(Ⅱ) Ion Template and Pb(Ⅱ) |
|
| 摘要: |
| 关键词: 壳聚糖膜 模板螯合 铅离子 动力学 |
| 基金项目: |
| Abstract: Chitosan and chitosan membranes with Pb(Ⅱ) ion as template were studied. The adsorption isotherms were correlated by dc/dt=-kcn at the temperature of 30 ℃, 35 ℃, 40 ℃, 45 ℃, 50 ℃. By means of linear correlation, the shapes of the isotherm curves were similar to the kinetic function of 2/c1/2=-kt and the apparent activation energy for with chitosan(123.8 kJ·moL-1) was larger than that of membrane with Pb(Ⅱ) ion(92.3kJ·moL-1). The chitosan membrane with Pb(Ⅱ) ion template was better “memory” function. The adsorption mechanism of chitosan with Pb(Ⅱ) was studied by IR and XPS. The results indicated that the nitrogen in -NH2 and the oxygen in C3-OH of chitosan were coordination atoms. |
| Keywords: chitosan membrane template chelation Pb(Ⅱ) ion kinetics |
| |
| 摘要点击次数: 1176 |
| 全文下载次数: 1032 |
| 丁纯梅,宋庆平,孔 霞,吴大荣,徐阳阳,乔永波.壳聚糖/Pb(Ⅱ)模板壳聚糖膜与Pb(Ⅱ)螯合反应的动力学及机理探讨[J].无机化学学报,2004,20(6):711-714. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
