A rubidium and cesium adsorbent, a preparation method thereof, and an adsorption method

By grafting crown ether derivatives and aminophosphonic acid groups onto rubidium-cesium adsorbents and combining them with a methylsilane interface modification layer, the problem of efficient recovery of rubidium and cesium by existing rubidium-cesium adsorbents has been solved, achieving highly selective adsorption and the production of high-purity eluent.

CN122399765APending Publication Date: 2026-07-17JINGMEN POWER BATTERY RECYCLING TECH CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JINGMEN POWER BATTERY RECYCLING TECH CO LTD
Filing Date
2026-05-28
Publication Date
2026-07-17

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Abstract

本发明提供了一种铷铯吸附剂及其制备方法、吸附方法，所述铷铯吸附剂包括载体，及载体上接枝的冠醚衍生物与氨基膦酸基团，还包括包覆于载体外部的甲基硅烷界面修饰层。本发明提供的铷铯吸附剂，通过冠醚衍生物、氨基膦酸基团与甲基硅烷界面修饰层的三重协同作用，实现了对铷铯离子的高选择性吸附，同时对锂、钾离子产生排斥效应，从而能够实现从含锂钾铷铯离子溶液中高效回收铷铯锂，铷收率≥99%、铯收率≥99%、锂回收率≥98%，且得到的洗脱液中铷离子与铯离子的纯度较高。
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