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Application of Dibenzo-21-Crown-7 for Cesium Extraction from Geothermal Water
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作者 LIU Mingming GAO Daolin +2 位作者 ZHANG Nan YU Xiaoping DENG Tianlong 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2014年第S1期350-351,共2页
Cesium as a kind of alkali metals has widely been used in catalysis,medicine,biology,magnetic fluid power and other high-tech fields(Liao and Yang,2012;Cao et al.,2011;Wang et al.,2011).Although there was abundant of
关键词 INTERMEDIATE dibenzo-21-crown-7 SYNTHESIS EXTRACTION
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Extraction of Cesium from the Irradiated Nuclear Waste by 4(5),4'(5')-Bis[1-hydroxyalkylbenzo]-21-crown-7 被引量:1
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作者 YingDU WenJunCHEN ShengYingQIN 《Chinese Chemical Letters》 SCIE CAS CSCD 2004年第10期1219-1222,共4页
Bis[1-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 nitromet... Bis[1-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. 展开更多
关键词 Bis[1-hydroxyalkyl]dibenzo-21-crown-7 EXTRACTION cesium.
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4(5),4′(5′)-二烷基二苯并-21-冠-7的合成
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作者 杜瑛 魏星耀 +3 位作者 李建章 曾伟 陈文浚 秦圣英 《四川大学学报(自然科学版)》 CAS CSCD 北大核心 2003年第6期1193-1195,共3页
在PPA存在下,长链羧酸与二苯并 21 冠 7进行烷酰化反应,制得了4(5),4′(5′) 二烷酰基二苯并 21 冠 7(1a~c),随后用黄鸣龙法还原成标题化合物2a~c.它们均经元素分析,红外光谱,核磁共振氢谱和质谱进行了表征.
关键词 二烷基二苯并-21-冠-7 脂肪羧酸 合成 烷酰化反应 黄鸣龙法 冠醚
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