| 光谱学与光谱分析 |
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| FTIR Investigation of Organic Phase Containing Rare Earth Ion in Naphthenic Acid-Phosphonate Ester-Heptane System |
| YIN Wen-xuan1, 2, LIU Yu-feng1, ZHANG Yuan-fu1, WENG Shi-fu1, WU Jin-guang1* |
1. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
2. College of Chemical Engineering, China University of Mining Technology and Engineering, Xuzhou 221008, China |
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Abstract Naphthenic acid (NA) was mixed with PC88A in heptane, and 10 moL·L-1 KOH aqueous solution was used to saponify the solution subsequently. The transparent and clear appearance of the obtained solution indicated the formation of w/o micell and microemusion. In the present study, micell with high saponification percentage (80%) was used to extract neodymium. The organic phase structure was characterized using FTIR spectroscopy in the extraction process. IR spectra indicate that the characteristic peaks of ν(COOH), νs(COO-) and ν(PO) shift to lower wavenumbers as the loading of Nd in organic phase increases. The results demonstrated that Nd(Ⅲ) are coordinated to PO and COO- groups simultaneously, and the supramolecules with self-assembly structure was formed containing PC88A and NA, which were binding with Nd(Ⅲ) in the extracted organic phase.
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Received: 2004-11-12
Accepted: 2005-02-26
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Corresponding Authors:
WU Jin-guang
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| Cite this article: |
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YIN Wen-xuan,LIU Yu-feng,ZHANG Yuan-fu, et al. FTIR Investigation of Organic Phase Containing Rare Earth Ion in Naphthenic Acid-Phosphonate Ester-Heptane System[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(05): 825-827.
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https://www.gpxygpfx.com/EN/Y2006/V26/I05/825 |
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