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首页> 外文期刊>Separation and Purification Technology >Synthesis of octa(1,1,3,3-tetramethylbutyl)octakis(dimethylphosphinoylmethyleneoxy)calix[8]arene and its application in the synergistic solvent extraction and separation of lanthanoids
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Synthesis of octa(1,1,3,3-tetramethylbutyl)octakis(dimethylphosphinoylmethyleneoxy)calix[8]arene and its application in the synergistic solvent extraction and separation of lanthanoids

机译：八（1,1,3,3-四甲基丁基）辛基（二甲基膦酰基亚甲氧基）杯[8]芳烃的合成及其在镧系元素协同溶剂萃取和分离中的应用

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摘要

A new lower rim substituted calix[8]arene bearing eight phosphine oxide moieties has been synthesized.The structure of 5,11,17,23,29,35,41,47-octa(1,1,3,3-tetramethylbutyl)-49,50,51,52,53,54,55,56-octakis(dimethylphosphinoylmethyleneoxy)calix[8]arene(S)was identified and confirmed by elemental analysis,IR-,~1H,~(13)C and ~(31)P-{~1H} NMR spectroscopy as well as by ES-mass spectrometry.The synergistic solvent extraction of five selected lanthanoid ions(La~(3+),Nd~(3+),Eu~(3+),Ho~(3+)and Lu~(3+))with 4-benzoyl-3-methyl-1-phenyl-5-pyrazolone(HP)and S in chloroform has been studied.It was found that in the presence of this phosphorus-containing calix[8]arene the lanthanoids have been extracted as LnP3-S.On the basis of the experimental data,the values of the equilibrium constants have been calculated.The influence of the synergistic agent(S)on the extraction process has been discussed.A synergistic effect of about three orders of magnitude occurs in the extraction of Ln(III)with the mixture of HP and S.The values of the separation factors between the adjacent elements have been evaluated.
机译：合成了一种新的具有8个氧化膦基团的下边缘取代杯[8]芳烃。结构5,11,17,23,29,35,41,47-八（1,1,3,3-四甲基丁基）通过元素分析鉴定并确认了-49,50,51,52,53,54,55,56-辛基（二甲基膦酰基亚甲氧基）杯[8]芳烃（S），并通过IR-，〜1H，〜（13）C和〜确定（31）P- {〜1H} NMR光谱以及ES-质谱分析。协同溶剂萃取五种镧系离子（La〜（3 +），Nd〜（3 +），Eu〜（3+）研究了在氯仿中用4-苯甲酰基-3-甲基-1-苯基-1-吡唑啉酮（HP）和S对，，Ho〜（3+）和Lu〜（3+））的存在进行了研究。提取了该含磷杯[8]芳烃中的镧系元素作为LnP3-S。在实验数据的基础上，计算了平衡常数的取值。协同剂对萃取过程的影响用混合液萃取Ln（III）产生约三个数量级的协同作用HP和S的e。已经评估了相邻元素之间的分离因子的值。

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