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

页码：453 / 460

页数：8

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