Abstract
The IR spectrum of V4Nb18O55 has been compared with the IR spectra of selected niobates of known structures to show structural relations between these compounds. This comparison shows that V4Nb18O55 has crystal structure related to T-Nb2O5, W16Nb18O94 and Ba2NaNb5O15.
On the other hand, reaction between V2O5 and H-Nb2O5 yields a solid solution of V2O5 in VNb9O25. It has been proposed two models of synthesized solid solution with formulas V1+xNb9-xO25 or V1+xNb9O25+5x/2.Independently of Nb2O5 polymorph, used for synthesis, the metastable compound VNbO5 cannot be synthesized in the solid state below 650°C
Similar content being viewed by others
References
M. Sarzi-Amade, S. Morselli, P. Moggi, A. Maione, P. Ruiz, M. Devillers, Appl. Catal. A 284, 11 (2005)
N. Deligne, D. Bayot, M. Degant, M. Devillers, J. Solid State Chem. 180, 2026 (2007)
J.M. Amarilla, B. Casal, E. Ruiz-Hitzky, J. Mater. Chem. 6, 1005 (1996)
O. Yamaguchi, Y. Mukaida, H. Shigeta, Z. Anorg. Allg. Chem. 574, 235 (1989)
F. Barbieri, D. Cauzzi, F. Smet, M. Devillers et al., Catal. Today 61, 353 (2000)
H. Shadow, H. Oppermann, O. Grossmann, K. Krzewska, B. Wehner, Cryst. Res. Technol. 26, 401 (1991)
A. Polte, H. Langbein, Z. Anorg. Allg. Chem. 620, 1947 (1994) (in German)
T. Mayer-Uhma, H. Langbein, Thermochim. Acta 447, 178 (2006)
H. Langbein, T. Mayer-Uhma, Mater. Res. Bull. (2008), DOI:10.1016/j.materresbull.2008.06.023
J.L. Waring, R.S. Roth, J. Research Nat. Bur. Stand. 69A, 119 (1965)
O. Yamaguchi, Y. Mukaida, H. Shigeta, Adv. Powder Technol. 1, 3 (1990)
L.M. Kovba, B.K. Trunov, Zh. Struk. Khim. 6, 244 (1965) (in Russian)
P. Tabero, Ceramics Silikaty 49, 34 (2005)
K. Kato, Acta Cryst. B32, 764 (1976)
K. Kato, S. Tamura, Acta Cryst. B31, 673 (1975)
R. Enjalbert, J. Galy, Acta Cryst. 42C, 1467 (1986)
K. Lukaszewicz, A. Pietraszko, J. Stepien-Damm, Mat. Res. Bull. 29, 987 (1994)
G. Foulon, M. Ferriol, A. Brenier, G. Boulon, Eur. J. Solid State Inorg. Chem. 33, 673 (1996)
M.T. Casais, E. Gutierrez-Puebla, M.A. Monge, I. Rasines, C. Ruiz-Valero, J. Solid State Chem. 102, 261 (1993)
A.W. Sleight, Acta Chem. Scand. 20, 1102 (1966)
Author information
Authors and Affiliations
Corresponding author
About this article
Cite this article
Tabero, P., Filipek, E. & Piz, M. Reactivity of T-Nb2O5 or H-Nb2O5 towards V2O5. Synthesis in the solid state and properties of V4Nb18O55 . cent.eur.j.chem. 7, 222–227 (2009). https://doi.org/10.2478/s11532-009-0001-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.2478/s11532-009-0001-7