[1]
C.K. Gupta, N. Krishnamurthy, Extractive Metallurgy of Rare-Earths, CRC press, (2004).
Google Scholar
[2]
S.B. Castor, J.B. Hedrick Rare earth elements. In: Kogel, JE, Tivedi, NC, Barker, JM, and Krukowski, ST (editors): Industrial Minerals and Rocks Commodities, Markets and Uses, 7th edition, Society for Mining, Metallurgy and Exploration, Littleton, Colorado 2006, pp.1555-1568.
Google Scholar
[3]
P. Ramakul, T. Supajaroon, T. Prapasawat, U. Pancharoen, A.W. Lothongkum, J. Ind. Eng. Chem. 15 (2009) 224.
Google Scholar
[4]
S.F. Douglas, Solvent extraction in hydrometallurgy: the role of organophosphorus extractants, Journal of Organometallic Chemistry 690 (2005) 2426-2438.
DOI: 10.1016/j.jorganchem.2004.11.037
Google Scholar
[5]
V. K. Jain, S. G. Pillap, H. C Mandal, "Liquid-Liquid Extraction, Pre concentration and Transport Studies of Lanthanum(III) with Calix.
DOI: 10.4067/s0717-97072007000200013
Google Scholar
[4]
Resorcinarene-Hydroxamic Acid (C4RAHA), " J. Chil. Chem. Soc., 52 (2) (2007) 1177-1181.
Google Scholar
[6]
B.N. Kokare, A.M. Mandhare, M.A. Anuse, Liquid-liquid extraction of cerium (IV) from salicylate media using N-7V-octylaniline in xylene as an extractant, J. Chil. Chem. Soc., 55(4) (2010), 431-435.
DOI: 10.4067/s0717-97072010000400004
Google Scholar
[7]
B.W. Moore, U.S. Patent 6093376 (2000).
Google Scholar
[8]
T. Sato, Liquid-liquid extraction of rare-earth elements from aqueous acid solutions by acid organophosphorus compounds, Hydrometallurgy 22 (1989) 121-140.
DOI: 10.1016/0304-386x(89)90045-5
Google Scholar
[9]
E. Antico, A. Masanaa, M. Hidalgo, V. Salvado, M. Iglesias, M. Valiente, Solvent extraction of yttrium from chloride media by di(2-ethylhexyl)phosphoric acid in kerosene, Anal. Chim. Acta 327 (1996) 267–276.
DOI: 10.1016/0003-2670(96)00103-1
Google Scholar
[10]
N.V. Thakur, Separation of rare-earths by solvent extraction, Miner. Process. Extr. Metall. Rev. 21 (1–5) (2000) 277–306.
Google Scholar
[11]
Rabie, A group separation and purification of Sm, Eu and Gd from Egyptian beach monazite mineral using solvent extraction. Hydrometallurgy 85 (2–4) (2007) 81–86.
DOI: 10.1016/j.hydromet.2005.12.012
Google Scholar
[12]
X. Huang, J. Li, Z. Long, Y. Zang, X. Xue, Z. Zhu, 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. 26 (3) (2008).
DOI: 10.1016/s1002-0721(08)60107-6
Google Scholar
[13]
C. Basualto, F. Valenzuela, L. Molina, J.P. Munoz, E. Fuentes, J. Sapag, Study of the solvent extraction of the lighter lanthanide metal ions by means of organophosphorus extractants, J. Chill. Chem. Soc., 58 (2) 2013 (1785-1789).
DOI: 10.4067/s0717-97072013000200032
Google Scholar
[14]
P. Miranda, Jr. and L.B. Zinner. Separation of samarium and gadolinium solutions by solvent extraction[J]. Journal of Alloys and Compounds, 249(1-2) (1997), 116-118.
DOI: 10.1016/s0925-8388(96)02754-5
Google Scholar
[15]
B.R. Reddy, S. Radhika, B.N.P. Kumar, Liquid–liquid extraction studies of trivalent Yttrium from phosphoric acid solutions using TOPS 99 as an extractant, Sep. Sci. Technol. 45 (2010) 1426–1432.
DOI: 10.1080/01496391003730365
Google Scholar