Characterization of the interaction of rare earth elements with P507 in a microfluidic extraction system using spectroscopic analysis

被引：65
作者：
Chen, Kaihua [1 ,2 ]
He, Yuan [1 ,2 ]
Srinivasakannan, C. [3 ]
Li, Shiwei [1 ,2 ]
Yin, Shaohua [1 ,2 ]
Peng, Jinhui [1 ,2 ]
Guo, Shenghui [1 ,2 ]
Zhang, Libo [1 ,2 ]
机构：
[1] Kunming Univ Sci & Technol, State Key Lab Complex Nonferrous Met Resources Cl, Kunming 650093, Yunnan, Peoples R China
[2] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Yunnan, Peoples R China
[3] Khalifa Univ Sci & Technol, Petr Inst, Chem Engn Dept, POB 253, Abu Dhabi, U Arab Emirates
来源：
CHEMICAL ENGINEERING JOURNAL | 2019年 / 356卷
基金：
中国国家自然科学基金;
关键词：
Rare earths; P507; Spectrum; Complex extraction; Microreactor; DI-(2-ETHYLHEXYL) PHOSPHORIC-ACID; ACID-2-ETHYLHEXYL ESTER EHEHPA; DISPERSION MICRO-EXTRACTOR; 2 COMPLEXING AGENTS; SOLVENT-EXTRACTION; CHLORIDE MEDIUM; LANTHANUM III; SEPARATION; WATER; SUPERCONDUCTORS;
D O I：
10.1016/j.cej.2018.09.039
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
An attempt to characterize the interaction of rare earth elements with P507 in a microfluidic extraction system containing lactic acid as complexing agent is made using spectroscopic (FT-IR, UV-Vis, NMR and MS) analysis. The role of lactic acid in the extraction process is analyzed. The extraction mechanism confirmed that lactic acid does not involve in the extraction reaction. A comparative analysis of the composition of the extracts using FTIR, UV-Vis, NMR and MS methods, indicates that the extracted complexes of rare earth ions located in the center is formed by the cation exchange process between P-O-H and RE3+, and coordination process between P=O and RE3+.
引用
收藏
页码：453 / 460
页数：8
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