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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY · 2021 ·Vol. 327 ·期 1 ·565-573 · IF 1.371

Extraction behavior of several lanthanides from nitric acid with DMDODGA in [C4mim][NTf2] ionic liquid

Chen Qi,Lu Chuan,Hu Yifu,Liu Yaoyang,Zhou Yu,Jiao Caishan,Zhang Meng,Hou Hongguo,Gao Yang,Tian Guoxin

The extraction behavior of several lanthanide ions (La(III), Nd(III), Sm(III), Gd(III), Yb(III)) from the nitric acid medium using ionic liquid [C 4 mim][NTf 2 ] solvent containing N,N’-dimethyl-N,N’-dioctyl-3-oxadiglycolamide (DMDODGA) was studied. The effects of the concentration of HNO 3 , H + and NO 3 − in aqueous phase, as well as the DMDODGA concentration and temperature on the distribution ratio of Ln(III) were analyzed. The distribution ratio of lanthanide ions into [C 4 mim][NTf 2 ] is much higher than that reported for aliphatic hydrocarbon diluents. The extraction mechanism was demonstrated to agree with the cation-exchange mechanism. The stoichiometric ratio of Ln (III)/DMDODGA complex is 1:3 or 1:4.

研究领域: 化学 · 材料科学

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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY · 2024 ·Vol. 333 ·期 4 ·2195-2206 · IF 1.5

Transport and separation behavior of La(III) and Eu(III) in a plate type supported liquid membrane with DMDODGA as the carrier

Li Junze,Zhao Chuang,Guo Wenbin,Gao Yang,Liu Tingting,Zhou Yu,Hou Hongguo,Jiao Caishan,Zhang Meng

Using DMDODGA as the carrier, the transportation and separation behavior of Eu(III) and La(III) were studied using a plate-type supported liquid membrane. La(III) and Eu(III) reach their maximum transport rates at feed phase nitric acid concentrations of 2 and 4 mol/L, which are 72.41 (± 2.12)% and 77.80 (± 2.45)%; Increasing the concentration of NO 3 − in feed phase will promote the transport of both ions. The change of HNO 3 concentration in feed phase had major effect on the separation of Eu(III)/La(III), and the co-transport of Eu(III)/La(III) was observed when the concentration of NO 3 − was 3 mol/L.

研究领域: 化学工程 · 分离科学

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Extraction behavior of several lanthanides from nitric acid with DMDODGA in [C4mim][NTf2] ionic liquid

Transport and separation behavior of La(III) and Eu(III) in a plate type supported liquid membrane with DMDODGA as the carrier