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首页> 外文期刊>RSC Advances >Solvent extraction of palladium(II) with newly synthesized asymmetric branched alkyl sulfoxides from hydrochloric acid
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Solvent extraction of palladium(II) with newly synthesized asymmetric branched alkyl sulfoxides from hydrochloric acid

机译：钯（II）溶剂萃取盐酸新合成的不对称支链烷基亚砜

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摘要

A group of new asymmetric branched alkyl sulfoxides was synthesized and applied in palladium(II) extraction for the first time. According to the experimental data, the concentration of hydrochloric acid in aqueous phase greatly influenced Pd(II) extraction, which could be interpreted by different mechanisms (ligand substitution mechanism at low acidity and ion association mechanism at high acidity). In regard to structure effect, the steric hindrance of branched alkyl showed remarkable influence on the extraction performance of sulfoxides. On the basis of thermodynamic analysis, it was demonstrated that higher temperature exerted positive influence on the Pd(II) extraction reaction. As for the separation of Pd(II) and Pt(IV), low concentration of hydrochloric acid was considered to be appropriate for highly effective separation. Furthermore, ammonia solution was proven to be an efficient stripping agent for palladium recovery from organic phase.
机译：合成了一组新的不对称支链烷基磺氧化物并在第一次钯（II）萃取中。 根据实验数据，水相中的盐酸浓度大大影响Pd（ii）萃取，其可以通过不同机制（在高酸度下的低酸度和离子缔合机制的配体取代机制）解释。 关于结构效应，支化烷基的空间阻断对亚砜的提取性能显着影响。 在热力学分析的基础上，证明了较高的温度对Pd（II）提取反应产生阳性影响。 至于Pd（II）和Pt（IV）的分离，认为低浓度的盐酸适合于高效分离。 此外，已被证明是氨溶液是从有机相回收钯的有效汽提剂。

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  • 来源
    《RSC Advances》 |2015年第81期|共8页
  • 作者

    Huang Yixian; Tong Yu; Wang Chen; Tang Ke; Yang Yanzhao;

  • 作者单位

    Shandong Univ Sch Chem &

    Chem Engn Educ Minist Key Lab Special Funct Aggregated Mat Jinan 250100 Peoples R China;

    Shandong Univ Sch Chem &

    Chem Engn Educ Minist Key Lab Special Funct Aggregated Mat Jinan 250100 Peoples R China;

    Shandong Univ Sch Chem &

    Chem Engn Educ Minist Key Lab Special Funct Aggregated Mat Jinan 250100 Peoples R China;

    Shandong Univ Sch Chem &

    Chem Engn Educ Minist Key Lab Special Funct Aggregated Mat Jinan 250100 Peoples R China;

    Shandong Univ Sch Chem &

    Chem Engn Educ Minist Key Lab Special Funct Aggregated Mat Jinan 250100 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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