用于贫化锌分离的冠醚树脂合成及其特性研究

Abstract

Abstract: PS@DB18C6 crown ether resin based on polystyrene and dibenzo-18-crown ether-6 was synthesized by poly-condensation method, and its stability, adsorption and desorption mechanism and characteristics were explored. Then Zinc isotopes separation experiment by column chromatography was carried out. The results showed that PS@DB18C6 crown ether resin has large adsorption capacity in acetone solution at pH=7. The adsorption model of Zinc ion is a quasi-first-order kinetic equation, and the desorption of α-hydroxyisobutyric acid (AHIB) solution at pH=3 satisfies the first-order kinetic equation. PS@DB18C6 crown ether resin can maintain good structural stability during adsorption and desorption. Zinc isotopes can be effectively separated by column chromatography with PS@DB18C6 crown ether resin. After the leaching operation of 5 m chromatographic column, the maximum front-end enrichment values (β) of ⁶⁶Zn and ⁶⁸Zn are 1.019 6 and 1.020 8 respectively.

Key words: Dibenzo-18-crown ether-6, Column chromatography, Depleted Zinc, Isotopes separation, Maximum enrichment value

CLC Number:

TL75

Li Chengxin, Su Xingdong, Zhan Jie, He Ye, Li Xuefei, Li Jiawen, Liu Feng, Xue Yi, Zu Jianhua. Synthesis and Characteristics of Crown Ether Resin for Depleted Zinc Separation[J].RADIATION PROTECTION BULLETIN, 2023, 43(3-4): 67-74.

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Synthesis and Characteristics of Crown Ether Resin for Depleted Zinc Separation

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