| Extraction of Cesium from the Irradiated Nuclear Waste by 4(5),4'(5')-Bis[1-hydroxyalkylbenzo]-21-crown-7 |
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| 作者姓名： | Ying DU Wen Jun CHEN Sheng Ying QIN* |
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| 作者单位： | Ying DU，Wen Jun CHEN，Sheng Ying QIN* Department of Chemistry，Sichuan University，Chengdu 610064 |
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| 摘 要： | The fission product 137Cs accounts for a large fraction of the radioactivity in high-levelnuclear waste (HLW). Because of the hazard to environment and the widespreadapplication of 137Cs gamma radiatior1, a need has arisen to develop improved methods forthe removal and recovery of radiocesium from these wastes. Reports have shown thatsome calixcrown compounds may be highly selective for Cs cation2, but, since thesynthesis of them is difficult and the cost is high, it might obviate their use…
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Extraction of Cesium from the Irradiated Nuclear Waste by 4(5),4'(5')-Bis[1-hydroxyalkylbenzo]-21-crown-7 |
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| Ying DU,Wen Jun CHEN,Sheng Ying QIN*.Extraction of Cesium from the Irradiated Nuclear Waste by 4(5),4''''(5'''')-Bis[1-hydroxyalkylbenzo]-21-crown-7[J].Chinese Chemical Letters,2004,15(10). |
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| Authors: | Ying DU Wen Jun CHEN Sheng Ying QIN |
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| Institution: | Ying DU,Wen Jun CHEN,Sheng Ying QIN* Department of Chemistry,Sichuan University,Chengdu 610064 |
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| Abstract: | Bis1-hydroxyalkylbenzo]-21-crown-7 (A-C) have been synthesized by ) two-step reactions from dibenzo-21-crown-7 (DB21C7). Extraction of cesium cation from nitric acid solutions by A-C has been investigated in nitromethane. Under the conditions of various concentration of HNO3 or NaNO3, the extractabilities of A and B were superior to that of DB21C7. |
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| Keywords: | Bis[1-hydroxyalkyl]dibenzo-21-crown-7 extraction cesium |
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