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Efficient selective separation of yttrium from holmium and erbium using carboxyl functionalized ionic liquids
Hu, Kaibo1,2; Gao, Hongshuai2,3; Nie, Yi2,3; Dong, Haifeng2,3; Yan, Junjun1,2; Zhang, Xiangping2,3; Li, Fujian2
2021-08-15
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume269Pages:7
AbstractThe efficient extraction separation of yttrium (Y) from holmium (Ho) and erbium (Er) is always difficult because of their similar physical and chemical properties. In this work, three pyridine carboxylic acid ionic liquids were synthesized and used to extraction of Y. The effects of aqueous phase acidity, extraction time, extractant concentration, temperature and alkyl chain length of ionic liquids on extraction of Y were investigated systematically. The extraction efficiency of [(CH2)(7)COOHpyr][NTf2] for Y increased with an increase in pH, and could reach 99.3% at a pH of 2.5. Meanwhile, the extraction process could achieve equilibrium completely within 5 min. In addition, both the separation coefficients of Ho/Y and Er/Y were greater than 2, which were higher than other ionic liquid extractants. At last, 98.5% of Y could be stripped from the loaded ionic liquid phase with a single step using 0.04 mol/L HCl, and the extraction efficiency of the [(CH2)(7)COOHpyr][NTf2] for Y still maintained about 98% after 8 cycles. A possible cation exchange extraction mechanism was proposed by slope analysis and FTIR spectroscopy.
KeywordCarboxylic acid functionalized ionic liquids Solvent extraction Yttrium Selective separation
DOI10.1016/j.seppur.2021.118774
Language英语
WOS KeywordRARE-EARTH-ELEMENTS ; SOLVENT-EXTRACTION ; SYNERGISTIC EXTRACTION ; STRATEGY ; METALS ; ACIDS
Funding ProjectNational Natural Science Foundation of China[22078323] ; National Natural Science Foundation of China[22008244] ; Innovation Academy for Green Manufacture[IAGM2020DB03]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; Innovation Academy for Green Manufacture
WOS IDWOS:000652641400003
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/48827
Collection中国科学院过程工程研究所
Corresponding AuthorGao, Hongshuai; Li, Fujian
Affiliation1.Zhengzhou Univ, Coll Chem & Engn, Zhengzhou 450001, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, CAS Key Lab Green Proc & Engn,State Key Lab Multi, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Coll Chem & Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Hu, Kaibo,Gao, Hongshuai,Nie, Yi,et al. Efficient selective separation of yttrium from holmium and erbium using carboxyl functionalized ionic liquids[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2021,269:7.
APA Hu, Kaibo.,Gao, Hongshuai.,Nie, Yi.,Dong, Haifeng.,Yan, Junjun.,...&Li, Fujian.(2021).Efficient selective separation of yttrium from holmium and erbium using carboxyl functionalized ionic liquids.SEPARATION AND PURIFICATION TECHNOLOGY,269,7.
MLA Hu, Kaibo,et al."Efficient selective separation of yttrium from holmium and erbium using carboxyl functionalized ionic liquids".SEPARATION AND PURIFICATION TECHNOLOGY 269(2021):7.
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