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Proceedings Paper

Fourier transform infrared characterization of the acidic phosphoric extractant system containing lanthanide
Author(s): Y.-H. Shen; S.-K. Yao; D.-J. Wang; Weijin Zhou; Ying Xue Li; Q. Peng; JinGuang Wu; Guang-Xian Xu
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Paper Abstract

The aggregation states and FTIR spectra of the extractive organic phases of saponified HDEHP [di(2-ethylhexyl) phosphoric acid] (1). DMHPA [di(1-methylheptyl) phosphoric acid] (2) and (HDEHP + DMHPA) (3) containing lanthanides were studied, respectively. Transparent solution formed in system (1) while transparent gel formed in system (2) when the loading of lanthanides was more than 50%. The aggregation state of system (3) depends on the molar ratio of HDEHP:DMHPA and the loading percentage of lanthanide. From their FTIR spectra, it can be seen that the P equals O band of gel split into 1164, 1199, and 1232 cm-1, and the P-O-C band split into 1015, 1076, and 1083 cm-1 as well. The results suggested that the aggregation state of lanthanide complex changes considerably in the three systems, and multiple coordination states of p equals o with lanthanide result in the band split. Multiple interactions between P equals O, P-O-C and lanthanide ions form 3-D network in the gel.

Paper Details

Date Published: 31 January 1994
PDF: 2 pages
Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994); doi: 10.1117/12.166610
Show Author Affiliations
Y.-H. Shen, Peking Univ. (China)
S.-K. Yao, Peking Univ. (China)
D.-J. Wang, Peking Univ. (China)
Weijin Zhou, Peking Univ. (China)
Ying Xue Li, Peking Univ. (China)
Q. Peng, Peking Univ. (China)
JinGuang Wu, Peking Univ. (China)
Guang-Xian Xu, Peking Univ. (China)

Published in SPIE Proceedings Vol. 2089:
9th International Conference on Fourier Transform Spectroscopy
John E. Bertie; Hal Wieser, Editor(s)

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