Selective extraction of In(III), Ga(III) and Zn(II) using a novel extractant with phenylphosphinic acid

doi:10.1016/j.cjche.2015.06.001

Abstract

Abstract: A new extractant, [N,N-di(2-ethylhexyl)amino]methylphenylphosphinic acid (DEAPP), was synthesized to develop the mutual separation techniques of In(III), Ga(III) and Zn(II). The extraction selectivity for In(III), Ga(III) and Zn(II) with DEAPP was higher than that of the commercial phosphorus acid extractants such as D2EHPA and PC-88A. The extraction selectivity for metal ions in 1 mol·L^-1 aqueous ammonium nitrate solution with DEAPP was in the following order: In(III) > Ga(III) > Zn(II). These selective extraction behaviors indicate that the amino moiety of DEAPP plays an important role in the mutual separation of In(III), Ga(III) and Zn(II). The extraction equilibria of In(III), Ga(III) and Zn(II) with DEAPP (=HR) were expressed by the following reactions: In³⁺+2(HR)₂ ⇋InR₃(HR)+3H⁺, Ga³⁺+1.5(HR)₂+NO₃^- ⇋GaR₂(HR)(NO₃)+2H⁺, and Zn²⁺+2(HR)₂ ⇋ ZnR₂(HR)₂ + 2H⁺. The extraction equilibrium constants of In(III), Ga(III) and Zn(II) with DEAPP were determined to be Kex,M=1.7 × 10⁴ [dm³·mol^-1], 4.17 [(dm³·mol^-1)^0.5], and 1.55 x 10^-2 [-], respectively.

Key words: Liquid-liquid extraction, Phosphinic acid, Indium(III), Gallium(III), Zinc(II), Mutual separation, Extraction equilibrium

Yuji Sasaki, Naoki Matsuo, Tatsuya Oshima, Yoshinari Baba. Selective extraction of In(III), Ga(III) and Zn(II) using a novel extractant with phenylphosphinic acid[J]. , 2016, 24(2): 232-236.

Yuji Sasaki, Naoki Matsuo, Tatsuya Oshima, Yoshinari Baba. [J]. , 2016, 24(2): 232-236.

References

[1] J.S. Liu, H. Chen, X.Y. Chen, Z.L. Guo, Y.C. Hu, C.P. Liu, Y.Z. Sun, Extraction and separation of In(III), Ga(III) and Zn(II) from sulfate solution using extraction resin, Hydrometallurgy 82 (2006) 137-143.
[2] J. Jayachandran, P. Dhadke, Solvent extraction separation of gallium(III) with 2-ethylhexyl phosphonic acid mono 2-ethylhexyl ester (PC-88A), Hydrometallurgy 50 (1998) 117-124.
[3] S. Nishihama, T. Hirai, I. Komasawa, Separation and recovery gallium and indium from simulated zinc residue by liquid-liquid extraction, Ind. Eng. Chem. Res. 38 (1999) 1032-1039.
[4] S.Nishihama, A.Hino, T. Hirai, I. Komasawa, Extraction and separation of galliumand indiumfromaqueous chloride solution using several organophosphorus compounds as extractants, J. Chem. Eng. Jpn 31 (1998) 818-827.
[5] S. Virolainen, D. Ibana, E. Paatero, Recovery of indium from indium tin oxide by solvent extraction, Hydrometallurgy 107 (2011) 56-61.
[6] J.S. Liu, H. Chen, Z.L. Guo, Y.C. Hu, Selective separation of In(III), Ga(III), and Zn(II) from dilute solution using solvent-impregnated resin containing Di(2-ethylhexyl) phosphoric acid, J. Appl. Polym. Sci. 100 (2006) 253-259.
[7] M.S. Lee, J.G. Ahn, E.C. Lee, Solvent extraction separation of indium and galliumfrom sulphate solutions using D2EHPA, Hydrometallurgy 63 (2002) 269-276.
[8] B. Gupta, N.Mudhar, S.N. Tandon, Extraction and separation of galliumusing Cyanex 301: its recovery from Bayer's liquor, Ind. Eng. Chem. Res. 44 (2005) 1922-1927.
[9] B. Gupta, N.Mudhar, I. Singh, Separations and recovery of indium and gallium using bis(2,4,4-trimethylpentyl)phosphinic acid (Cyanex 272), Sep. Purif. Technol. 57 (2007) 294-303.
[10] B. Gupta, A. Deep, P. Malik, Liquid-liquid extraction and recovery of indium using Cyanex 923, Anal. Chim. Acta 513 (2004) 463-471.
[11] F.J. Alguacil, Solvent extraction of indium (III) by LIX 973N, Hydrometallurgy 51 (1999) 97-102.
[12] X. Zhang, G. Yin, Z. Hu, Extraction and separation of gallium, indium and thallium with several carboxylic acids from chloride media, Talanta 59 (2003) 905-912.
[13] I.S. EL-Yamani, E.I. Shabana, Studies on extraction of indium(III) chloride complexes by long-chain amines, J. Radioanal. Nucl. Chem. 88 (1985) 217-223.
[14] S. Fan, Q. Jia, N. Song, R. Su, W. Liao, Synergistic extraction study of indium from chloride medium by mixtures of sec-nonylphenoxy acetic acid and trialkyl amine, Sep. Purif. Technol. 75 (2010) 76-80.
[15] H. Imura, A. Oshiro, K. Ohashi, Synergistic extraction of gallium(III) and indium(III)with 2,4-pentanedione and 3,5-dichlorophenol on the basis of outer-sphere complexation, Anal. Sci. 14 (1998) 1093-1098.
[16] H. Ma, Y. Lei, Q. Jia, W. Liao, L. Lin, An extraction study of gallium, indium, and zinc with mixtures of sec-octylphenoxyacetic acid and primary amine N1923, Sep. Purif. Technol. 80 (2011) 351-355.