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首页> 外文期刊>Solvent Extraction and Ion Exchange >Solvent extraction and separation of rare earths from chloride media using -aminophosphonic acid extractant HEHAMP
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Solvent extraction and separation of rare earths from chloride media using -aminophosphonic acid extractant HEHAMP

机译：用 - 氨基膦酸萃取剂Hehamp溶剂萃取和稀土稀土分离稀土

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摘要

Solvent extraction and separation of rare earths (REs: La similar to Lu, plus Y and Sc) by a novel synthesized extractant, (2-ethylhexylamino)methyl phosphonic acid mono-2-ethylhexyl ester (HEHAMP, abbreviated as H(2)A(2)), were investigated in chloride medium. The favorable separation factors (SFs) between adjacent heavy REs suggested that HEHAMP has a better separation performance than P507. The extracted complex of trivalent REs was determined to be REClH(2)A(4) by the slope analysis method. Thermodynamic parameters (H, G, and S) of Lu were calculated as 7.47kJ mol(-1), -6.05kJ mol(-1), and 45.4J mol(-1)K(-1) at 298.15K, respectively, which indicate that the extraction reaction of Lu is an endothermic process. The loading capacity of 30% (v/v) HEHAMP toward Lu(III), Yb(III), and Y(III) was about 15.17g Lu2O3/L, 14.46g Yb2O3/L, and 12.64g Y2O3/L, respectively. HCl is the most efficient stripping acid, and 92% of the loaded Yb(III) can be stripped by one-stage stripping with 2mol/L HCl.
机译：通过新的合成萃取剂，（2-乙基己基氨基）甲基膦酸单-2-乙基己酯（Hehamp，缩写为H（2）a的稀土稀土（Res：la类似于Lu，Plus和Y和Sc）的溶剂萃取和分离（2）），在氯化物介质中进行研究。相邻重型之间的有利分离因子（SFS）建议Hehamp比P507更好的分离性能。通过斜率分析方法测定三价res的提取物res的复合物是ReClH（2）A（4）。 Lu的热力学参数（H，G和S）分别计算为7.47kJ摩尔（-1），-6.05kjmol（-1）和45.4JMol（-1）K（-1），分别为298.15K ，表明Lu的提取反应是吸热过程。朝向Lu（III），Yb（III）和Y（III）的加载能力分别为约15.17g，Yb2O3 / L，14.46g YB2O3 / L和12.64g Y2O3 / L. 。 HCl是最有效的汽提酸，92％的负载的Yb（III）可以通过用2mol / L HCl剥离剥离。

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  • 来源
  • 作者

    Zhao Qi; Zhang Zhifeng; Li Yanling; bian Xue; Liao Wuping;

  • 作者单位

    Northeastern Univ Sch Met Dept Met Phys Chem Shenyang 110004 Liaoning Peoples R China;

    Chinese Acad Sci Changchun Inst Appl Chem State Key Lab Rare Earth Resource Utilizat ERC Separat &

    Purificat REs &

    Thorium Changchun Jilin Peoples R China;

    Chinese Acad Sci Changchun Inst Appl Chem State Key Lab Rare Earth Resource Utilizat ERC Separat &

    Purificat REs &

    Thorium Changchun Jilin Peoples R China;

    Northeastern Univ Sch Met Dept Met Phys Chem Shenyang 110004 Liaoning Peoples R China;

    Chinese Acad Sci Changchun Inst Appl Chem State Key Lab Rare Earth Resource Utilizat ERC Separat &

    Purificat REs &

    Thorium Changchun Jilin Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 分离过程;试剂与纯化学品的生产;
  • 关键词

    -aminophosphonic acid; solvent extraction; separation; rare earths;

    机译：- 氨基磷酸;溶剂萃取;分离;稀土;

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