FTIR and EXAFS investigations of microstructures of gold solvent extraction: hydrogen bonding between modifier and Au(CN)(2)(-)
Ma, G; Yan, WF; Hu TD(胡天斗); Hu, TD; Chen, J; Yan, CH; Gao, HC; Wu, JG; Xu, GX
刊名PHYSICAL CHEMISTRY CHEMICAL PHYSICS
1999
卷号1期号:22页码:5215-5221
学科分类Chemistry; Physics
DOI10.1039/a906108h
通讯作者Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China ; Inst High Energy Phys, Synchrotron Radiat Lab, Beijing 100039, Peoples R China ; Inst Precious Met, Kunming 650221, Peoples R China
文章类型Article
英文摘要The microstructures of loaded organic phases of three quaternary amine solvent extraction systems for gold, which were N263-xylene, N263-tributyl phosphate (TBP)-dodecane and N263-2-ethylhexanol (isooctanol)-dodecane (N263-trialkylmethylammonium chloride; alkyl=C-8-C-10), were studied by Fourier transform infrared (FTIR) spectroscopy and extended X-ray absorption fine structure (EXAFS) spectroscopy. According to the EXAFS results, it was found that the gold coordination environment was the same before and after extraction. However, the C=N stretching vibrations of Au(CN)(2)(-) in the three systems differed greatly. The second derivative spectra of C=N stretching bands of Au(CN)(2)(-) were also found to be different. In order to explain the differences in the IR characteristics of C=N in the three extraction systems, three microstructure models are proposed. For the N263-xylene system, the model is a simple ion pair. For the other two systems with a modifier (TBP and isooctanol), the models are two supramolecular structures based on hydrogen bonding between the modifier and Au(CN)(2)(-). Some related work such as on the hydration of acetonitrile and the fine structure of C=N in solid KAu(CN)(2) was also performed in order to offer additional supporting evidence for the reliability of the proposed models.
类目[WOS]Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]Chemistry ; Physics
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语种英语
WOS记录号WOS:000083622500020
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被引频次:29[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240021
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
作者单位中国科学院高能物理研究所
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GB/T 7714
Ma, G,Yan, WF,Hu TD,et al. FTIR and EXAFS investigations of microstructures of gold solvent extraction: hydrogen bonding between modifier and Au(CN)(2)(-)[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,1999,1(22):5215-5221.
APA Ma, G.,Yan, WF.,胡天斗.,Hu, TD.,Chen, J.,...&Xu, GX.(1999).FTIR and EXAFS investigations of microstructures of gold solvent extraction: hydrogen bonding between modifier and Au(CN)(2)(-).PHYSICAL CHEMISTRY CHEMICAL PHYSICS,1(22),5215-5221.
MLA Ma, G,et al."FTIR and EXAFS investigations of microstructures of gold solvent extraction: hydrogen bonding between modifier and Au(CN)(2)(-)".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 1.22(1999):5215-5221.
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