Optical analysis and separation of trivalent lanthanides in deep eutectic solvents

作     者：Anika Soldner Burkhard Konig Anika S?ldner;Burkhard K?nig

作者机构：Institute of Organic ChemistryUniversity of RegensburgUniversitaetsstrasse 3193053 RegensburgGermany 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2020年第38卷第7期

页      面：784-792,I0004页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：Project supported by the ForCYCLE program of the Bavarian State Ministry of the Environment and Consumer Protection (BAF01SoFo-65211) 

主　　题：Deep eutectic solvents Europium Terbium Luminescence Separation Rare earths 

摘      要：Deep eutectic solvents(DESs) were used for luminescence measurements in quantitative analysis of trivalent lanthanide ions and as solvents for light rare earth elements(LREE) in solid-liquid *** spectroscopic characteristics of lanthanide chlorides LnCl3(Ln=Eu,Tb),respectively their aquo complexes,are described in a comprehensive study that demonstrates the significant enhancement of the phosphorescence emission intensity in DESs as polar and weakly coordinating *** DESs stabilize the lanthanide ion luminescence against changes in temperature and moisture,which is advantageous compared with the use of ionic *** amounts of water lead in certain eutectic systems even to a further increase in phosphorescence emission *** investigating the solubility of lanthanide sesquioxides Ln2 O3(Ln=La,Nd,Sm,Eu,Gd,Tb,Dy) in DESs,selectivities are identified that may be of use for the separation of LREE.