New Polyoxotungstates with Ln(III) and Co(II) and Their Immobilization in Silica Particles


Article Preview

New lanthanotungstocobaltates with the Keggin structure and general formula KxHy[Ln(CoW11O39)(H2O)3]⋅nH2O or KxHyLn[Ln(CoW11O39)(H2O)3]⋅nH2O, LnIII = Ce, La, Eu, Sm, Tb, were prepared and characterized for the first time. Hybrid silica materials, with the polyoxoanions anchored to spherical silica particles, were also prepared and characterised. Their study by IR spectroscopy and EDS suggested that the structure of the Keggin-type polyanions is maintained when they are immobilized in the silica material.



Materials Science Forum (Volumes 514-516)

Edited by:

Paula Maria Vilarinho




M.S. S. Balula et al., "New Polyoxotungstates with Ln(III) and Co(II) and Their Immobilization in Silica Particles", Materials Science Forum, Vols. 514-516, pp. 1206-1210, 2006

Online since:

May 2006




[1] M. T. Pope: Heteropoly and Isopoly Oxometalates, Springer Verlag, Berlin (1983).

[2] C. L. Hill (guest editor): Chem. Rev. Vol. 98 (1998) nº 1, thematic issue.

[3] L.C.W. Baker, V.E.S. Baker, S.H. Wasfi, G.A. Candela, A.H. Kahm: J. Am. Chem. Soc. Vol. 94 (1972) p.5499.

[4] J.M. Clemente-Juan, E. Coronado: Coordination Chemistry Reviews Vol. 193-195 (1999) 361.

[5] Q. Wu: Materials Letters Vol. 56 (2002) p.19.

[6] Q. Wu, X. Cai, W. Feng, W. Pang: Thermochimica Acta Vol. 428 (2005) p.15.

[7] Q. H. Yang, D. F. Zhou, H. C. Dai, J. F. Liu, Y. Xing, Y. H. Lin, H. Q. Jia: Polyhedron Vol. 16 (1997) p.3985.

[8] Z. Ye, M. Tan, G. Wang, J. Yuan: J. Mater. Chem. Vol. 14 (2004) p.851.

[9] P.C.R. Santos, H.I.S. Nogueira, F.A.A. Paz, R.A.S. Ferreira, L.D. Carlos, J. Klinowski, T. Trindade: Journal of Alloys and Compounds Vol. 374 (2004) p.344.

[10] M. Sadakane, M. Dickman and M.T. Pope: Angew. Chem. Int. Ed. Eng. Vol. 39 (2000) p.2914.

[11] F.L. Sousa, A.C. A. S. Ferreira, R.A. Sá Ferreira, A.M.V. Cavaleiro, L.D. Carlos, H.I.S. Nogueira, J. Rocha, T. Trindade: J. Nanosci. Nanotech. Vol. 4 (2004) p.214.

[12] F. L. Sousa, F. A. A. Paz, C. M. C. E. Granadeiro, A. M. V. Cavaleiro, J. Rocha, J. Klinowski, H. I. S. Nogueira: Inorg. Chem. Commun., in press.

[13] J. Niu, J. Zhao, J. Wang: J. Mol. Struct. Vol. 701 (2004) p.19.

[14] K. Nomiya, M. Miwa, R. Kobayashi, M. Aiso: Bull. Chem. Soc. Jpn. Vol. 54 (1981) p.2983.

[15] K. Nomiya, R. Kobayashi, M. Miwa: Bull. Chem. Soc. Jpn. Vol. 56 (1983) p.2272.

[16] A.M.V. Cavaleiro, J.D. Pedrosa de Jesus and H.I.S. Nogueira: Metal Clusters in Chemistry (Eds. P. Braunstein, L.A. Oro, P. Raithby: Vol. 1, Chapter 23, Wiley-VCH, Weinheim 1999).

[17] J. Bas-Serra, I. Todorut, N. Casañ-Pastor, J. Server-Carrió, L.C.W. Baker, R. Acerete: Synth. React. Inorg. Met. - Org. Chem. Vol. 25 (1995) p.869.

[18] J. Server-Carrió, J. Bas-Serra, M.E. González-Núñez, A. Garcia-Gastaldi, G.B. Jameson, L.C.W. Baker, R. Acerete: J. Am. Chem. Soc. Vol. 121 (1999) p.977.


[19] M.M.Q. Simões, C.M.M. Conceição, J.A.F. Gamelas, P. M.D.N. Domingues, A.M.V. Cavaleiro, J.A.S. Cavaleiro, A.J.V. Ferrer-Correia, R.A.W. Johnstone: J. Mol. Catal. A Vol. 144 (1999) p.461.


[20] .M.S. Balula, J.A. Gamelas, H.M. Carapuça, A.M.V. Cavaleiro, W. Schlindwein: Eur, J. Inorg. Chem. (2004) p.619.

[21] M. Tatsumisago, K. Kishida, T. Minami: Solid State Ionics Vol. 59 (1993) p.171.

[22] P. Mialane, L. Lisnard, A. Mallard, J. Marrot, E. Antic-Fidancev, P. Aschehoug, D. Vivien, F. Sécheresse: Inorg. Chem. Vol. 42 (2003) p.2102.