A novel ammonium ionic liquid based extraction strategy for separating scandium from yttrium and lanthanides

Xiaoqi Sun; Yang Ji; Lin Guo; Ji Chen; Deqian Li

doi:10.1016/j.seppur.2011.06.034

A novel ammonium ionic liquid based extraction strategy for separating scandium from yttrium and lanthanides

Xiaoqi Sun^*
, Yang Ji
, Lin Guo
, Ji Chen
, Deqian Li

^*Corresponding author for this work

CAS - Changchun Institute of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

107 Scopus citations

Abstract

Ionic liquid (IL)-based extraction is a promising high-efficiency and environmentally benign separation technology. Imidazolium ILs lose their cations or anions to aqueous phase during extraction, the release lead to water pollution. To develop sustainable IL-based extraction system, we firstly investigate quaternary ammonium nitrate IL-based extraction strategy. Alkylated phosphine oxides (Cyanex925) in tricaprylmethylammonium nitrate ([A336][NO ₃]) are studied for separating Sc from Y and lanthanides. Distribution ratio and separation factor of the Cyanex925-[A336][NO₃] system for Sc³⁺ are by far larger than those achieved using Cyanex925-[C₈mim][PF₆] system. The stability and solvating mechanism of Cyanex925-[A336][NO₃] extraction system can avoid release of [A336][NO₃] to aqueous phase. The novel quaternary ammonium nitrate IL-based extraction system is an efficient and sustainable separation strategy.

Original language	English
Pages (from-to)	25-30
Number of pages	6
Journal	Separation and Purification Technology
Volume	81
Issue number	1
DOIs	https://doi.org/10.1016/j.seppur.2011.06.034
State	Published - 5 Sep 2011
Externally published	Yes

Keywords

Extraction
Ionic liquid
Rare earth
Sustainability

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10.1016/j.seppur.2011.06.034

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@article{987c62aea9644a908a0c611162ae5915,

title = "A novel ammonium ionic liquid based extraction strategy for separating scandium from yttrium and lanthanides",

abstract = "Ionic liquid (IL)-based extraction is a promising high-efficiency and environmentally benign separation technology. Imidazolium ILs lose their cations or anions to aqueous phase during extraction, the release lead to water pollution. To develop sustainable IL-based extraction system, we firstly investigate quaternary ammonium nitrate IL-based extraction strategy. Alkylated phosphine oxides (Cyanex925) in tricaprylmethylammonium nitrate ([A336][NO 3]) are studied for separating Sc from Y and lanthanides. Distribution ratio and separation factor of the Cyanex925-[A336][NO3] system for Sc3+ are by far larger than those achieved using Cyanex925-[C8mim][PF6] system. The stability and solvating mechanism of Cyanex925-[A336][NO3] extraction system can avoid release of [A336][NO3] to aqueous phase. The novel quaternary ammonium nitrate IL-based extraction system is an efficient and sustainable separation strategy.",

keywords = "Extraction, Ionic liquid, Rare earth, Sustainability",

author = "Xiaoqi Sun and Yang Ji and Lin Guo and Ji Chen and Deqian Li",

year = "2011",

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day = "5",

doi = "10.1016/j.seppur.2011.06.034",

language = "英语",

volume = "81",

pages = "25--30",

journal = "Separation and Purification Technology",

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TY - JOUR

T1 - A novel ammonium ionic liquid based extraction strategy for separating scandium from yttrium and lanthanides

AU - Sun, Xiaoqi

AU - Ji, Yang

AU - Guo, Lin

AU - Chen, Ji

AU - Li, Deqian

PY - 2011/9/5

Y1 - 2011/9/5

N2 - Ionic liquid (IL)-based extraction is a promising high-efficiency and environmentally benign separation technology. Imidazolium ILs lose their cations or anions to aqueous phase during extraction, the release lead to water pollution. To develop sustainable IL-based extraction system, we firstly investigate quaternary ammonium nitrate IL-based extraction strategy. Alkylated phosphine oxides (Cyanex925) in tricaprylmethylammonium nitrate ([A336][NO 3]) are studied for separating Sc from Y and lanthanides. Distribution ratio and separation factor of the Cyanex925-[A336][NO3] system for Sc3+ are by far larger than those achieved using Cyanex925-[C8mim][PF6] system. The stability and solvating mechanism of Cyanex925-[A336][NO3] extraction system can avoid release of [A336][NO3] to aqueous phase. The novel quaternary ammonium nitrate IL-based extraction system is an efficient and sustainable separation strategy.

AB - Ionic liquid (IL)-based extraction is a promising high-efficiency and environmentally benign separation technology. Imidazolium ILs lose their cations or anions to aqueous phase during extraction, the release lead to water pollution. To develop sustainable IL-based extraction system, we firstly investigate quaternary ammonium nitrate IL-based extraction strategy. Alkylated phosphine oxides (Cyanex925) in tricaprylmethylammonium nitrate ([A336][NO 3]) are studied for separating Sc from Y and lanthanides. Distribution ratio and separation factor of the Cyanex925-[A336][NO3] system for Sc3+ are by far larger than those achieved using Cyanex925-[C8mim][PF6] system. The stability and solvating mechanism of Cyanex925-[A336][NO3] extraction system can avoid release of [A336][NO3] to aqueous phase. The novel quaternary ammonium nitrate IL-based extraction system is an efficient and sustainable separation strategy.

KW - Extraction

KW - Ionic liquid

KW - Rare earth

KW - Sustainability

UR - https://www.scopus.com/pages/publications/80052036421

U2 - 10.1016/j.seppur.2011.06.034

DO - 10.1016/j.seppur.2011.06.034

M3 - 文章

AN - SCOPUS:80052036421

SN - 1383-5866

VL - 81

SP - 25

EP - 30

JO - Separation and Purification Technology

JF - Separation and Purification Technology

IS - 1

ER -

A novel ammonium ionic liquid based extraction strategy for separating scandium from yttrium and lanthanides

Abstract

Keywords

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