| 新型球形复合无机离子交换剂的制备及其对锶和铯的去除 |
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| 引用本文： | 储昭升,孙兆祥.新型球形复合无机离子交换剂的制备及其对锶和铯的去除[J].北京师范大学学报(自然科学版),2002,38(1):90-95. |
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| 作者姓名： | 储昭升 孙兆祥 |
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| 作者单位： | 北京师范大学化学系,北京,100875 |
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| 基金项目： | 国家自然科学基金;59572024; |
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| 摘 要： | 用溶胶-凝胶的方法制备了新型球形复合无机离子交换剂水合二氧化钛-水合五氧化二锑(HTO-HAP),并以此为基体,进一步制备了磷酸钛-五氧化二锑(TiP-HAP)、磷酸钛-五氧化二锑-磷钼酸铵(TiP-HAP-AMP)球形复合无机离子交换剂.研究比较了它们对Sr2+和Cs+的离子交换性能和稳定性.结果表明:HTO-HAP在弱酸性条件下对Sr2+和Cs+有较大的交换容量,但耐酸性不好;而作为基体与磷酸反应,或进一步复合磷钼酸铵后,其耐酸性和对Cs+的交换性能均有较大增强.
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| 关 键 词： | 复合无机离子交换剂 溶胶-凝胶法 铯 锶 交换容量 |
| 修稿时间： | 2001年8月28日 |
PREPARATION OF NEW TYPES OF SPHERICAL COMPOSITE ION-EXCHANGERS AND THEIR REMOVING OF Sr2+ AND Cs+ |
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| Abstract: | Spherical composite ion-exchanger hydrated titanium dioxide hydrated antimony pentoxide (HTO-HAP) was synthesized by the sol-gel method. And using it as matrix, titanium phosphate-hydrated antimony pentoxide (TiP-HAP) and titanium phosphate-hydrated antimony pentoxide-ammonium molybdophophate (TiP-HAP-AMP) are prepared. Their stabilities are tested and ion exchange properties for Sr2+ and Cs+ are studied. The results show that the HTO HAP has high ion exchange capacity for Sr2+ and Cs+ while not stable under strong acid condition. But after the reaction with phosphoric acid or ammonium molybdophophate, the acid fastness and exchange capacity for Cs+ in strong acid condition are greatly improved. |
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| Keywords: | composite ion exchanger sol gel method Cs+ Sr2+ exchange capacity |
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