Silver Extraction with Sulfide Type Trident Compounds

IF 0.6 4区工程技术 Q4 CHEMISTRY, MULTIDISCIPLINARY

Solvent Extraction Research and Development, Japan Pub Date : 2018-01-01 DOI:10.15261/SERDJ.25.71

K. Ohto, Takuyou Yoshinaga, Hiroaki Furugou, Shintaro Morisada, H. Kawakita, K. Inoue

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引用次数: 2

Abstract

A sulfide type trident molecule together with a monopodal compound has been prepared to investigate the extraction behavior of silver. The present trident molecule has a weaker extraction ability than thiol and dithioether derivatives of previously reported tripodal extraction reagents. On the contrary, it exhibited a higher extraction ability than the corresponding monopodal molecule due to the structural effect of the trident framework. Both sulfide molecules did not exhibit any pH dependency for silver extraction. The trident molecule showed a 1 : 1 stoichiometry (trident molecule : silver), while the monopodal molecule gave a 2 : 1 stoichiometry (monopodal molecule : silver). The coordination site of the trident molecule was confirmed by 1 H-NMR spectra before and after silver loading. The signal shifts for the protons of the methylene groups bounded to the sulfur atoms for the trident and monopodal compounds before and after silver loading were correlated with the formation of complexes. From the comparison of both molecules, the peak shift for the trident molecule included contributions not only from the functional groups but also from the structure of the trident framework.

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硫化物型三叉戟化合物萃取银

制备了一个硫化物型三叉戟分子和一个单极性化合物，研究了银的萃取行为。目前的三叉戟分子的萃取能力比以前报道的三叉戟萃取试剂的硫醇和二硫醚衍生物弱。相反，由于三叉戟框架的结构效应，它表现出比相应的单极性分子更高的提取能力。两种硫化物分子对银的萃取没有任何pH依赖性。三叉戟分子呈1:1的化学计量(三叉戟分子:银)，单极分子呈2:1的化学计量(单极分子:银)。负载银前后的1h - nmr谱证实了三叉戟分子的配位。负载银前后，三叉戟和单极性化合物与硫原子结合的亚甲基质子的信号位移与配合物的形成有关。从两种分子的比较可以看出，三叉戟分子的峰移不仅包括官能团的贡献，还包括三叉戟框架结构的贡献。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solvent Extraction Research and Development, Japan 工程技术-工程：化工

CiteScore

1.30

自引率

14.30%

发文量

审稿时长

1 months

期刊介绍： Solvent Extraction Research and Development, Japan (Solvent Extr. Res. Dev., Jpn.) is a periodical issued from Japan Association of Solvent Extraction (JASE) containing papers dealing with all aspects of solvent extraction and their related methods, underlying principles, and materials. Original articles, notes, technical reports, and critical reviews will be considered for publication. Original articles must be of reasonably broad scope and significance to the solvent extraction. Notes will originally describe novel work of a limited nature or especially significant work in progress. Authors can contribute some information of novel techniques, equipment or apparatus, reagents and diluents for solvent extraction as technical reports. Critical reviews will be received from the authors to whom the editorial committee asked to contribute.