| Microscopic mechanism in solvent extraction of Au（CN）2^- by cationic surfactant |
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| 引用本文： | 陈景,黄昆,余建民,吴瑾光,施鼐,徐光宪.Microscopic mechanism in solvent extraction of Au（CN）2^- by cationic surfactant[J].中国有色金属学会会刊,2005,15(1):153-159. |
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| 作者姓名： | 陈景 黄昆 余建民 吴瑾光 施鼐 徐光宪 |
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| 作者单位： | Institute of Precious Metals，Kunming 650221，China，Institute of Precious Metals，Kunming 650221，China，Institute of Precious Metals，Kunming 650221，China，College of Chemistry and Molecular Engineering，Peking University，Beijing 100871，China，College of Chemistry and Molecular Engineering，Peking University，Beijing 100871，China，College of Chemistry and Molecular Engineering，Peking University，Beijing 100871，China |
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| 基金项目： | 国家自然科学基金，云南省-北京大学合作项目 |
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| 摘 要： | 1 INTRODUCTIONSince Mooiman, Miller et al1, 2] reported theirinvestigation in 1983, solvent extraction ofAu(CN)-2 from alkaline cyanide solutions has beenan attractive project. In the recent years, thesestudies have been more and more explored, and therepresentative papers are listed in Refs.3 17].The solvent extraction of Au(CN)-2 by surfac tant CTMAB(cetyl trimithyl ammonium bromide)has been studied. It is different from the solventextraction of Au(CN…
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| 关 键 词： | 显微性质 溶剂萃取 金 相位组织 |
Microscopic mechanism in solvent extraction of Au(CN)2-by cationic surfactant |
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| CHEN Jing,HUANG Kun,YU Jian-min,WU Jin-guang,SHI Nai,XU Guang-Xian.Microscopic mechanism in solvent extraction of Au(CN)2-by cationic surfactant[J].Transactions of Nonferrous Metals Society of China,2005,15(1):153-159. |
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| Authors: | CHEN Jing HUANG Kun YU Jian-min WU Jin-guang SHI Nai XU Guang-Xian |
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| Abstract: | A new solvent extraction system of Au(Ⅰ)by surfactant CTMAB-TBP-inert diluent-Au(CN)2--H2O was investigated and established.The infrared spectra and the conductivities of loaded organic phases containing Au(Ⅰ)were recorded stage by stage.It was reported that in the presence of salting-out agents the pencent extraction of Au(Ⅰ)decreased,and the conversion of emulsions from W/O to O/W happened in the extraction processed.The results demonstrate that the extraction process of Au(CN)2-is carried out by two steps.First,an associated molecule between CTMA and TBP,as (C16 H33) (CH3)3 N ·H2O·O= P(OC4 H9)3,is formed by dint of water molecule,then it will pull Au(CN)2-into the organic phase based on the electro-neutrality. |
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| Keywords: | surfactant solvent extraction Au(CN)2- |
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