Skip to the content.

Niobium

Original source: Filella, M., May, P.M., 2020. The aqueous solution thermodynamics of niobium under conditions of environmental and biological interest. Applied Geochemistry 122, 104729.

Best stability constant values for niobium species, 25 °C and I 0 mol L-1:

Reaction log K
Nb(OH)5(am.,s) = Nb(OH)50 –7.510
Nb2O5(s) + 5 H2O = 2 Nb(OH)50 –18.31
Nb(OH)50 + H+ = Nb(OH)4+ + H2O 1.603
Nb(OH)50 + H2O = Nb(OH)6 + H+ –4.951
Nb6O198– + H+ = HNb6O197– 14.95
HNb6O197– + H+ = H2Nb6O196– 13.23
H2Nb6O196– + H+ = H3Nb6O195– 11.73
HNa7Nb6O19 ·5H2O(s) = 7 Na+ + HNb6O19 11.85

References

Abramov, P.A., Sokolov, M.N., Vicent, C., 2015. Polyoxoniobates and polyoxotantalayes as ligands – Revisited. Inorganics 3, 160–177.

Agulyansky, A., 2004. Chemistry of Tantalum and Niobium Fluoride Compounds. Elsevier, Amsterdam.

Aleksandrov, I.V., 1967. Niobium in the carbonate solutions and some considerations on the migration of rare elements under hydrothermal conditions. Geochem. Int. 4, 558–566.

Ali, R.F., Gates, B.D., 2018. Synthesis of lithium niobate nanocrystals with size focusing through an Ostwald ripening process. Chem. Mater. 30, 2028–2035.

Babko, A.K., Lukachina, V.V., Nabivanets, B.L., 1963. Solubility and acid-base properties of tantalum and niobium hydroxides. Russ. J. Inorg. Chem. 8, 957–961.

Babko, A.K., Nabivanets, B.L., Lukachina, V.V., 1967. Interaction of hydrated niobium pentoxide with hydrofluoric acid. Russ. J. Inorg. Chem. 12, 1568–1572.

Babko A.K., Volkova, A.I., 1962. Complex-formation in niobium(V)-salicylate-organic base systems. Russ. J. Inorg. Chem. 7, 1216–1220.

Baes, C.F., Mesmer, R.E., 1976. The Hydrolysis of Cations. Wiley, New York.

Balke, C.W., Smith, E.F., 1908. Observations on columbium. J. Amer. Chem. Soc. 30, 1637–1668.

Bedford, M. H., 1905. Columbates. J. Amer. Chem. Soc. 27, 1216–1221.

Byrne, R.H., 2002. Inorganic speciation of dissolved elements in seawater: the influence of pH on concentration ratios. Geochem. Trans. 3, 11–16.

Davies, J.E.D., Long, D.A., 1968. The vibrational spectra of titanium tetrachloride–hydrochloric acid and titanium tetrachloride–tri-n-butyl phosphate systems and the hexachloro-anions of zirconium(IV), hafnium(IV), niobium(V), and tantalum(V). J. Chem. Soc. A 2560–2564.

Deblonde, G.J.-P., Chagnes, A., Bélair S., Cote, G., 2015. Solubility of niobium(V) and tantalum(V) under mild alkaline conditions. Hydrometallurgy 156, 99–106.

Deblonde, G.J.-P., Moncomble, A., Cote, G., Bélair, S., Chagnes, A., 2015. Experimental and computational exploration of the UV-visible properties of hexaniobate and hexatantalate ions. RSC Adv. 7619–7627.

Erskine, S., Sink, M.L., Varga, L.P., 1969. Solvent extraction separation of tantalum and niobium fluorides with N-benzoyl-N-phenylhydroxylamine. Anal. Chem. 41, 70–73.

Etxebarria, N., Fernández, L.A., Madariaga, J.M., 1994. On the hydrolysis of niobium(V) and tantalum(V) in 3 mol dm−3 KCl at °25 C. Part 1. Construction of a thermodynamic model for Nb(V). J. Chem. Soc., Dalton Trans. 3055–3059.

Fairbrother, F., Taylor, J.B., 1956. Water-soluble complexes of niobium (columbium) and tantalum. Part I. Complexes with α-hydroxy-acids and (2-hydroxyethyl)-amines. J. Chem. Soc. 4946–4954.

Filowitz, M., Ho, R.K.C., Klemperer, W.G., Shum, W., 1979. 17O Nuclear Magnetic Resonance spectroscopy of polyoxometalates. 1. Sensitivity and resolution. Inorg. Chem. 18, 93–103.

Filella, M., Magnenat, D.-J., Bensimon, M., 2014. Direct determination of niobium at the low nanogram level in mineral waters and freshwaters. Anal. Methods 6, 8090–8093.

Filella, M., May, P.M., 2019. The aqueous solution thermodynamics of tantalum under conditions of environmental and biological interest. Appl. Geochem. 109, 104402.

Firdaus, M.L., Minami, T., Norisuye, K., Sohrin, Y., 2011. Strong elemental fractionation of Zr–Hf and Nb–Ta across the Pacific Ocean. Nat. Geosci. 4, 227–230.

Fullmer, L.B., Molina, P.I., Antonio, M.R., Nyman, M., 2014. Contrasting ion-association behaviour of Ta and Nb polyoxometalates. Dalton Trans. 43, 15295–15299.

Goiffon, A., Granger, R., Bockel, C., Spinner, B. 1973. Etude des équilibres dans les solutions alcalines du niobium V [Study of the equilibria in alkaline solutions of Nb V]. Revue de Chimie Minérale 10, 487–502 [in French].

Griffith, W.P., Wickins, T.D., 1967. Raman studies on species in aqueous solutions. Part II. Oxy-species of metals of Groups VIA, VA, and IVA. J. Chem. Soc. A 675–679.

Guillaumont, R., Franck, J.C., Muxart, R., 1970. Contribution à l’étude de l’hydrolyse du niobium [Contribution to the study of the hydrolysis of niobium]. Radiochem. Radioanal. Lett. 4, 73–79 [in French].

Gunn, G., Ed. 2014. Critical Metals Handbook. American Geophysical Union and Wiley. Nottingham, UK.

Haïssinsky, M., Yang, J.-T., 1950. Sur la stabilité de quelques complexes organiques des éléments des quatrième et cinquième groupes du système périodique: Oxalates, Citrates et Tartrates de Nb, Ta et Pa [On the stability of some organic complexes of the elements of the fourth and fifth groups of the periodic system: oxalates, citrates and tartrates of Nb, Ta and Pa]. Anal. Chim. Acta 4, 328–332 [in French].

Hammer, R.R., 1979. A Determination of the Stability Constants of a Number of Metal Fluoride Complexes and Their Rates of Formation. USDOE Report, Idaho Chemical Processing Plant, EXXON Nuclear Idaho Company, ENICO 1004 (as cited by Wood, 2004).

Huffman, E.H., Iddings, G.M., Lilly, R.C., 1951. Anion exchange of zirconium, hafnium, niobium and tantalum in hydrochloric acid solutions. J. Am. Chem. Soc. 73, 4474–4475.

Ivanenko, V.I., Kadyrova, G.I., Kravtsov, V.I., 1996. Niobium (V) polynuclear complexes in sulfuric acid solutions. Russian J. Appl. Chem. 69, 13–16.

Kanzelmeyer, J.H., Ryan, J., Freund, H., 1956. The nature of niobium(V) in hydrochloric acid solution. J. Am. Chem. Soc. 78, 3020–3023.

Keller, O.L. Jr., 1963. Identification of complex ions of niobium(V) in hydrofluoric acid solutions by Raman and infrared spectroscopy. Inorg. Chem. 2, 783–787.

Kitamura, A., Fujiwara, K., Doi, R., Yoshida,Y., Mihara, M., Terashima, M., Yui, M., 2010. JAEA Thermodynamic Database for Performance Assessment of Geological Disposal of High-Level Radioactive and TRU-Wastes. Report JAEA-Data/Code 2009-024, Japan Atomic Energy Agency, 84 pp.

Konečný, C., 1967. Studies on complex formation by solvent extraction method. II. Niobium(V) complexes in aqueous solution. Z. Phys. Chem. 235, 39–48.

Land J.E., Osborne, C.V. 1972. The formation constants of the niobium fluoride system. J. Less-Common Met. 29, 147–153.

Lothenbach, B., Ochs, M., Wanner, H., Yui, M., 1999. Thermodynamic Data for the Speciation and Solubility of Pd, Pb, Sn, Sb, Nb and Bi in Aqueous Solution. Japan Nuclear Cycle Development Institute (JNC), TN8400 99-011.

Marignac, M.C., 1866. Recherches sur les combinaisons du niobium. Ann. Chim. Phys. 4, 5–75.

May, P.M., 2000. A simple, general and robust function for equilibria in aqueous electrolyte solutions to high ionic strength and temperature. Chem. Com., 1265–1266.

May, P.M., Rowland, D., 2018. JESS, a Joint Expert Speciation System - VI: Thermodynamically-consistent standard Gibbs energies of reaction for aqueous solutions. New J. Chem. 42, 7617–7629.

Moshier, R.W., 1964. Analytical Chemistry of Niobium and Tantalum. The Macmillan Company, New York.

Nelson, W.H. Tobias, R.S., 1963. Structure of the polyanions of the transition metals in aqueous solution: The hexatantalate. Inorg. Chem. 2, 985–992.

Neumann, G., 1964. On the hydrolysis of niobates in 3 M K(Cl) medium. Acta Chem. Scand. 18, 278–280.

Neumann, G., 1970. A potentiometric study of the system Nb(V)-OH–F- in 3 M K(Cl) medium. Arkiv för kemi 32, 229–247.

Nevzorov, A.N., Songina, O.A., 1967. The state of niobium in oxalic acid solutions. Russ. J. Inorg. Chem. 12, 1259–1262.

Nyman, M. 2011. Polyoxoniobate chemistry in the 21st century. Dalton Trans. 40, 8049-8058.

Nyman, M., Alam, T.M., Bonhomme, F., Rodriguez, M.A., Frazer, C.S., Welk, M.E., 2006. Solid-state structures and solution behavior of alkali salts of the [Nb6O19]8− Lindqvist ion. J. Clust. Sci. 17, 197–219.

Paquet, N., Indiketi, N., Dalencourt, C., Larivière, D., Roberge, S., Gruyer, N., Triffault-Bouchet, G., Fortin, C., 2019. Toxicity of tailing leachates from a niobium mine toward three aquatic organisms. Ecotox. Environ. Safe. 176, 355–363.

Peiffert, C., Nguyen-Trung, C., Palmer, D.A., Laval, J.P., Giffaut, E., 2010. Solubility of B-Nb2O5 and the hydrolysis of niobium(V) in aqueous solution as a function of temperature and ionic strength. J. Solution Chem. 39, 197–218.

Perrin, D.D., 1979. “IUPAC Chemical Data Series No. 22, Stability Constants of Metal-Ion Complexes, First Edition Part B, Organic Ligands” Pergamon, Oxford.

Pershina, V., 1998. Solution chemistry of element 105 Part II: Hydrolysis and complex formation of Nb, Ta, Ha and Pa in HCl solutions. Radiochim. Acta 80, 75–84.

Pevsner, T.V., Sheka, I.A., 1968. Reaction of niobium and tantalum with sulphate ions in solution. Russ. J. Inorg. Chem. 13, 1381–1384.

Pinto, M.B., Soares, A.L. Jr., Orellana, A.M., Duarte, H.A., De Abreu, H.A., 2017. Structural, electronic, and thermodynamic properties of the T and B phases of niobia: First-principle calculations. Phys. Chem. A 121, 2399−2409.

Poehle, S., Koschinsky, A., 2017. Depth distribution of Zr and Nb in seawater: The potential role of colloids or organic complexation to explain non-scavenging-type behavior. Mar. Chem. 188, 18–32.

Radchenko, V., Busse, S., Roesch, F., 2014. Desferrioxamine as an appropriate chelator for 90Nb: Comparison of its complexation properties for M-Df-Octreotide (M = Nb, Fe, Ga, Zr). Nucl. Med. Biol. 41, 721–727.

Rozantsev, G.M., Dotsenko, O.I., Taradina, G.V., 2000. Mathematical modeling and analysis of equilibria in solutions of Nb(V). Russ. J. Coord. Chem.. 26, 247–253.

Sahureka, F., Burns, R.C., von Nagy-Felsobuki, E.I., 2003. Electrospray ionisation mass spectroscopic characterisation of isopolyoxo-niobates and –tantalates. Inorg. Chim. Acta 351, 69–78.

Salminen, R. (Chief-editor), Batista, M.J., Bidovec, M., Demetriades, A., De Vivo, B., De Vos, W., Duris, M., Gilucis, A., Gregorauskiene, V., Halamic, J., Heitzmann, P., Lima, A., Jordan, G., Klaver, G., Klein, P., Lis, J., Locutura, J., Marsina, K., Mazreku, A., O’Connor, P.J., Olsson, S.Å., Ottesen, R.-T., Petersell, V., Plant, J.A., Reeder, S., Salpeteur, I., Sandström, H., Siewers, U., Steenfelt, A., Tarvainen, T., 2005. Geochemical Atlas of Europe. In: Part 1: Background Information, Methodology and Maps. Geological Survey of Finland, Espoo (526 pages).

Schäfer, H., Gruehn, R., Schulte, F., 1966. The modifications of niobium pentoxide. Angew. Chem., Int. Ed. Engl. 5, 40−52.

Schulz, K.J., Piatak, N.M., Papp, J.F., 2017. Niobium and tantalum, chap. M of Schulz, K.J., DeYoung, J.H., Jr., Seal, R.R., II, and Bradley, D.C., eds., Critical mineral resources of the United States—Economic and environmental geology and prospects for future supply: U.S. Geological Survey Professional Paper 1802, p. M1– M34.

Shabanova, G.N., Skorik, N.A., 1972. Stabilities of tartrate complexes of rare-earth elements and yttrium in water and in aqueous ethanol solutions. Russ. J. Inorg. Chem. 42, 198–201.

Sochevanov, V.G., Volkova, G.A., 1969. Use of polarography in the determination of the instability constants of complexonates of readily hydrolysable elements. Russ. J. Inorg. Chem. 61–64.

Spinner, B., 1968. Étude quantitative de l’hydrolyse des niobates de potassium [Quantitative study of the hydrolysis of the potassium niobates]. Rev. Chim. Miner., 5, 839–868 [in French].

Sillén, L.G., Martell, A.E., 1971. ‘Stability constants of metal-ion complexes SP25. Supplement No. 1 to Special Publication No. 25.’ (The Chemical Society: London.

Stolyarov, K.P., Amantova, I.A., 1966. Photometric study of ascorbic acid complexes. VI. The systems Zr, Hf, V(V), Nb, Ta, Mo, W – ascorbic acid. Vest. Leningr. Univ. 10, 133–138 [in Russian].

Timofeev, A., Migdisov, A.A., Williams-Jones, A.E., 2015. An experimental study of the solubility and speciation of niobium in fluoride-bearing aqueous solutions at elevated temperature. Geochim. Cosmochim. Acta 158, 103–111.

Tsikaeva, D.V., Agulyanskii, A.I., Balabanov, Yu.I., Kuznetsov, V.Ya., Kalinnikov, V.T. 1989. Complexation of niobium(V) in hydrofluoric acid solutions in the presence of fluorides of alkali metals and ammonium. Russ. J. Inorg. Chem. 34, 1740–1744.

Volkova, G.A., Sochevanov, V.G., 1967. Complex formation by niobium hydroxide with EDTA. Russ. J. Inorg. Chem., 12, 222–225.

Volkova, G.A., Sochevanov, V.G., 1969. Reaction of tantalum-hydroxide with ethylenediaminetetra-acetic acid. Russ. J. Inorg. Chem. 14, 652–654.

Wood, S.A., 2004. The aqueous geochemistry of zirconium, hafnium, niobium and tantalum. In: Rare-Element Geochemistry and Mineral Deposits. Ed. RL Linnen and IM Samson. (Geological Association of Canada Short Course Notes 17, St. Catharines, Ontario) pp. 217–268.

Yajima, T., 1994. Solubility measurements of uranium and niobium, Report of Yayoi Kenkyukai, UTNL-R 0331, University of Tokyo, pp. 127–144 [in Japanese] (as cited by Kitamura et al. 2010).

Yajima, T., Tobita, S., Ueta, S., 1992. Solubility measurements of niobium in the system Nb-O-H under CO2-free condition, presented at 1992 Fall Meeting of Atomic Energy Society of Japan, F33, p. 341 [in Japanese] (as cited by Kitamura et al. 2010).

Zhurenkov, E.M., Pobezhimovskaya, D.N., 1970. Determination of the composition and instability constants of oxalate complexes of niobium and tantalum by the solubility method. Radiochem. (Moscow) 12, 89–94.