Synergistic extraction of heavy rare earths by mixture of α-aminophosphonic acid HEHAMP and HEHEHP
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摘要
Synergistic extraction of heavy rare earths(REs) were investigated in chloride media by the mixture of(2-ethylhexylamino)methyl phosphonic acid mono-2-ethylhexyl ester(HEHAMP) and 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester(HEHEHP). The maximum synergistic enhancement coefficients(R) of Lu, Yb, Tm, Er, Y and Ho are 2.89, 2.76, 2.54, 2.14, 2.14 and 2.06, respectively, when the mole fraction X_(HEHAMP) is 0.5. The synergistic separation factors of the heavy REs are obtained(β_(Y/Ho)=1.31,β_(Er/Y)= 1.61,β_(Tm/Er)= 1.78, β_(Yb/Tm)= 1.76, β_(Lu/Yb) = 1.20). The extracted complex is determined to be RE[H(EHAMP)_2][H(EHEHP)_2]_2 by the slope analysis method. The loading capacities of the mixtures consisting of 15% HEHAMP and 15% HEHEHP for Y and Lu are about 26.59 g/L(Yb_2 O_3) and 27.25 g/L(Lu_2 O_3),respectively.
Synergistic extraction of heavy rare earths(REs) were investigated in chloride media by the mixture of(2-ethylhexylamino)methyl phosphonic acid mono-2-ethylhexyl ester(HEHAMP) and 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester(HEHEHP). The maximum synergistic enhancement coefficients(R) of Lu, Yb, Tm, Er, Y and Ho are 2.89, 2.76, 2.54, 2.14, 2.14 and 2.06, respectively, when the mole fraction X_(HEHAMP) is 0.5. The synergistic separation factors of the heavy REs are obtained(β_(Y/Ho)=1.31,β_(Er/Y)= 1.61,β_(Tm/Er)= 1.78, β_(Yb/Tm)= 1.76, β_(Lu/Yb) = 1.20). The extracted complex is determined to be RE[H(EHAMP)_2][H(EHEHP)_2]_2 by the slope analysis method. The loading capacities of the mixtures consisting of 15% HEHAMP and 15% HEHEHP for Y and Lu are about 26.59 g/L(Yb_2 O_3) and 27.25 g/L(Lu_2 O_3),respectively.
Synergistic extraction of heavy rare earths(REs) were investigated in chloride media by the mixture of(2-ethylhexylamino)methyl phosphonic acid mono-2-ethylhexyl ester(HEHAMP) and 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester(HEHEHP). The maximum synergistic enhancement coefficients(R) of Lu, Yb, Tm, Er, Y and Ho are 2.89, 2.76, 2.54, 2.14, 2.14 and 2.06, respectively, when the mole fraction X_(HEHAMP) is 0.5. The synergistic separation factors of the heavy REs are obtained(β_(Y/Ho)=1.31,β_(Er/Y)= 1.61,β_(Tm/Er)= 1.78, β_(Yb/Tm)= 1.76, β_(Lu/Yb) = 1.20). The extracted complex is determined to be RE[H(EHAMP)_2][H(EHEHP)_2]_2 by the slope analysis method. The loading capacities of the mixtures consisting of 15% HEHAMP and 15% HEHEHP for Y and Lu are about 26.59 g/L(Yb_2 O_3) and 27.25 g/L(Lu_2 O_3),respectively.
引文
1. Liu GH. Rare earth materials and its application technology. 1st ed. Beijing:Chemical Industry Press; 2005[in Chin.].
2. Zhang ZF, Jia Q, Liao WP. Progress in the separation processes for rare earth resources. In:Bünzli J-CG, Pecharsky VK, eds. Handbook on the physics and chemistry of rare earths. Amsterdam:Elsevier; 2015:287.
3. Xie F, Zhang TA, Dreisinger D, Doyle F. A critical review on solvent extraction of rare earths from aqueous solutions. Min Eng. 2014;56:10.
4. Sato T. Liquid-liquid extraction of rare-earth elements from aqueous acid solutions by acid organophosphorus compounds. Hydrometallurgy. 1989;22:121.
5. Ma EX, Yan XM, Wang SY, Long HY, Yuan CY. Solvent extraction of lanthanides by 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester. Sci China Ser A.1981;24:1237.
6. Wu DB, Niu CJ, Li DQ. Extraction mechanism of La~(3+)from hydrochloric acid solution using Cyanex 302. J Rare Earths. 2004;22:179.
7. Li KA, Freiser H. Extraction of lanthanide metals with bis(2,4,4-trimethylpentyl)phosphinic acid. Solvent Extr Ion Exch. 1986;4(4):739.
8. Sun XB, Wang YG, Li D. Selective separation of yttrium by CA-100 in the presence of a complexing agent. J Alloys Compd. 2006;408:999.
9. Wang JL, Chen G, Xu SM, Yin ZL, Zhang Q. Solvent extraction of rare earth ions from nitrate media with new extractant di-(2,3-dimethylbutyl)-phosphinic acid. J Rare Earths. 2016;34(7):724.
10. Zhao Q, Zhang ZF, Li YL, Bian X, Liao WP. Solvent extraction and separation of rare earths from chloride media using anα-aminophosphonic acid extractant HEHAMP. Solvent Extr Ion Exch. 2018;36(2):136.
11. Xiong Y, Li W, Wu DB, Li DQ, Meng SL. Kinetics and mechanism of Yb(III)extraction and separation from Y(III)with mixtures of bis(2,4,4-trimethylpentyl)phosphinic acid and 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester. Sep Sci Technol. 2006;41(1):167.
12. Wu DB, Li W, Li DQ, Xiong Y. The extraction and separation of Ho, Y, and Er(III)with the mixtures of Cyanex 302 and another organic extractant. Sep Sci Technol. 2007;42(4):847.
13. Huang XW, Li JN, Long ZQ, Zhang YQ, Xue XX, Zhu ZW. Synergistic extraction of rare earth by mixtures of 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester and di-(2-ethylhexyl)phosphoric acid from sulfuric acid medium.J Rare Earths. 2008;26(3):410.
14. Sun XB, Meng SL, Li DQ. Studies on the synergistic extraction of rare earths with a combination of 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester and trialkylphosphine oxide. J Chem Technol Biotechnol. 2006;81(5):755.
15. Torkaman R, Moosavian MA, Safdari J, Torab-Mostaedi M. Synergistic extraction of gadolinium from nitrate media by mixtures of bis(2,4,4-trimethylpentyl)dithiophosphinic acid and di-(2-ethylhexyl)phosphoric acid. Ann Nucl Eng. 2013;62:284.
16. Liu Y, Jeon HS, Lee MS. Solvent extraction of Pr and Nd from chloride solution by the mixtures of Cyanex 272 and amine extractants. Hydrometallurgy.2014;150:61.
17. Wang XL, Du M, Liu H. Synergistic extraction study of samarium(III)from chloride medium by mixtures of bis(2,4,4-trimethylpentyl)phosphinic acid and8-hydroxyquinoline. Sep Purif Technol. 2012;93:48.
18. Lu YC, Zhang ZF, Li YL, Wei HQ, Liao WP. Extraction and recovery of cerium(Ⅳ)and thorium(IV)from sulphate medium by anα-aminophosphonate extractant. J Rare Earths. 2017;35(1):34.
19. Zhang YQ, Li JN, Huang XW, Wang CM, Zhu ZW, Zhang GC. Synergistic extraction of rare earths by mixture of HDEHP and HEH/EHP in sulfuric acid medium. J Rare Earths. 2008;26(5):688.
20. Wang JL, Xie MY, Wang HJ, Xu SM. Solvent extraction and separation of heavy rare earths from chloride media using nonsymmetric(2,3-dimethylbutyl)(2,4,4'-trimethylpentyl)phosphinic acid. Hydrometallurgy.2017;167:39.
21. Kuang ST, Zhang ZF, Li YL, Wei HQ, Liao WP. Extraction and separation of heavy rare earths from chloride medium byα-aminophosphonic acid HEHAPP. J Rare Earths. 2018;36:304.
22. Kuang ST, Zhang ZF, Li YL, Wei HQ, Liao WP. Synergistic extraction and separation of rare earths from chloride medium by the mixture of HEHAPP and D2EHPA. Hydrometallurgy. 2017;174:78.
2. Zhang ZF, Jia Q, Liao WP. Progress in the separation processes for rare earth resources. In:Bünzli J-CG, Pecharsky VK, eds. Handbook on the physics and chemistry of rare earths. Amsterdam:Elsevier; 2015:287.
3. Xie F, Zhang TA, Dreisinger D, Doyle F. A critical review on solvent extraction of rare earths from aqueous solutions. Min Eng. 2014;56:10.
4. Sato T. Liquid-liquid extraction of rare-earth elements from aqueous acid solutions by acid organophosphorus compounds. Hydrometallurgy. 1989;22:121.
5. Ma EX, Yan XM, Wang SY, Long HY, Yuan CY. Solvent extraction of lanthanides by 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester. Sci China Ser A.1981;24:1237.
6. Wu DB, Niu CJ, Li DQ. Extraction mechanism of La~(3+)from hydrochloric acid solution using Cyanex 302. J Rare Earths. 2004;22:179.
7. Li KA, Freiser H. Extraction of lanthanide metals with bis(2,4,4-trimethylpentyl)phosphinic acid. Solvent Extr Ion Exch. 1986;4(4):739.
8. Sun XB, Wang YG, Li D. Selective separation of yttrium by CA-100 in the presence of a complexing agent. J Alloys Compd. 2006;408:999.
9. Wang JL, Chen G, Xu SM, Yin ZL, Zhang Q. Solvent extraction of rare earth ions from nitrate media with new extractant di-(2,3-dimethylbutyl)-phosphinic acid. J Rare Earths. 2016;34(7):724.
10. Zhao Q, Zhang ZF, Li YL, Bian X, Liao WP. Solvent extraction and separation of rare earths from chloride media using anα-aminophosphonic acid extractant HEHAMP. Solvent Extr Ion Exch. 2018;36(2):136.
11. Xiong Y, Li W, Wu DB, Li DQ, Meng SL. Kinetics and mechanism of Yb(III)extraction and separation from Y(III)with mixtures of bis(2,4,4-trimethylpentyl)phosphinic acid and 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester. Sep Sci Technol. 2006;41(1):167.
12. Wu DB, Li W, Li DQ, Xiong Y. The extraction and separation of Ho, Y, and Er(III)with the mixtures of Cyanex 302 and another organic extractant. Sep Sci Technol. 2007;42(4):847.
13. Huang XW, Li JN, Long ZQ, Zhang YQ, Xue XX, Zhu ZW. Synergistic extraction of rare earth by mixtures of 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester and di-(2-ethylhexyl)phosphoric acid from sulfuric acid medium.J Rare Earths. 2008;26(3):410.
14. Sun XB, Meng SL, Li DQ. Studies on the synergistic extraction of rare earths with a combination of 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester and trialkylphosphine oxide. J Chem Technol Biotechnol. 2006;81(5):755.
15. Torkaman R, Moosavian MA, Safdari J, Torab-Mostaedi M. Synergistic extraction of gadolinium from nitrate media by mixtures of bis(2,4,4-trimethylpentyl)dithiophosphinic acid and di-(2-ethylhexyl)phosphoric acid. Ann Nucl Eng. 2013;62:284.
16. Liu Y, Jeon HS, Lee MS. Solvent extraction of Pr and Nd from chloride solution by the mixtures of Cyanex 272 and amine extractants. Hydrometallurgy.2014;150:61.
17. Wang XL, Du M, Liu H. Synergistic extraction study of samarium(III)from chloride medium by mixtures of bis(2,4,4-trimethylpentyl)phosphinic acid and8-hydroxyquinoline. Sep Purif Technol. 2012;93:48.
18. Lu YC, Zhang ZF, Li YL, Wei HQ, Liao WP. Extraction and recovery of cerium(Ⅳ)and thorium(IV)from sulphate medium by anα-aminophosphonate extractant. J Rare Earths. 2017;35(1):34.
19. Zhang YQ, Li JN, Huang XW, Wang CM, Zhu ZW, Zhang GC. Synergistic extraction of rare earths by mixture of HDEHP and HEH/EHP in sulfuric acid medium. J Rare Earths. 2008;26(5):688.
20. Wang JL, Xie MY, Wang HJ, Xu SM. Solvent extraction and separation of heavy rare earths from chloride media using nonsymmetric(2,3-dimethylbutyl)(2,4,4'-trimethylpentyl)phosphinic acid. Hydrometallurgy.2017;167:39.
21. Kuang ST, Zhang ZF, Li YL, Wei HQ, Liao WP. Extraction and separation of heavy rare earths from chloride medium byα-aminophosphonic acid HEHAPP. J Rare Earths. 2018;36:304.
22. Kuang ST, Zhang ZF, Li YL, Wei HQ, Liao WP. Synergistic extraction and separation of rare earths from chloride medium by the mixture of HEHAPP and D2EHPA. Hydrometallurgy. 2017;174:78.