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Czasopismo
2009 | 7 | 1 | 42-46
Tytuł artykułu

Preparation of nanostructured porous SiO2-Al2O3 oxycarbonitride materials obtained by a new chemical precursor method

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Nanostructured hybrid materials containing Al2O3 were synthesized via a sol-gel method through hydrolysis and co-condensation reactions using trimethylsilyl isocyanate (TMSI) as a new silica source in the presence of tetramethoxysilane (TMOS) and three different quantities (10, 20 and 30 wt.%) of aluminum sec-butoxide (Al(OBusec)3 as a modifying agent. The xerogel nanostructured materials are pyrolyzed in nitrogen atmosphere in the temperature range from 400°C to 1100°C. The transformation of the xerogel hybrid networks into Al-Si oxycarbonitride materials has been investigated by XRD, FTIR, SEM, AFM, and 29Si MAS-NMR. To the best of our knowledge, the work reported here is the first synthesis of porous di-urethanesils modified with aluminum and one of the few examples of alumosilica oxycarbonitride materials [...]
Wydawca

Czasopismo
Rocznik
Tom
7
Numer
1
Strony
42-46
Opis fizyczny
Daty
wydano
2009-03-01
online
2008-12-23
Twórcy
  • Department of Silicate Technology, University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria, c_gugy79@abv.bg
  • Department of Silicate Technology, University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria
autor
  • Ceramic and Glass Engineering Department CICECO, Aveiro University, 3810-193, Aveiro, Portugal
  • Ceramic and Glass Engineering Department CICECO, Aveiro University, 3810-193, Aveiro, Portugal
Bibliografia
  • [1] K. Szaniawska, L. Murawski, R. Pastuszak, M. Welewski, G. Fantozzi, J. Non-Cryst. Solids 286, 58, (2001) http://dx.doi.org/10.1016/S0022-3093(01)00478-1[Crossref]
  • [2] Ts. Gerganova, Y. Ivanova, Y. Dimitriev, R. Bryaskova, “Balkan conference of young scientists” (Plovdiv, Bulgaria, 2005) 205
  • [3] Y. Ivanova, Ts. Gerganova, I. M. Salvado, M.V. Fernandes, Thin Solid Films 515, 271 (2006) http://dx.doi.org/10.1016/j.tsf.2005.12.080[Crossref]
  • [4] D.C. Bradley, R.C. Mehrotra, D.P. Gaur, Metal Alkoxides (Academic Press, London, 1978)
  • [5] J. Livage, M. Henry, C. Sanchez, Progr. Solid State Chem. 18, 259 (1988) http://dx.doi.org/10.1016/0079-6786(88)90005-2[Crossref]
  • [6] B.E. Yoldas, Applied Optics 19, 1425 (1980) http://dx.doi.org/10.1364/AO.19.001425[Crossref]
  • [7] M. Goncalves, V. Bermudes, R. Ferreira, L. Carlos, D. Ostrovskii, Chem. Mater. 16, 2530 (2004) http://dx.doi.org/10.1021/cm0348848[Crossref]
  • [8] B. Gates, Y. Xia, Chem. Mater. 11, 2827 (1999) http://dx.doi.org/10.1021/cm990195d[Crossref]
  • [9] Y. Ivanova, Y. Dimitriev, Ts. Gerganova, R. Bryaskova, M.V. Fernandes, I.M. Salvado, Cent. Eur. J. Chem 3, 452 (2005) http://dx.doi.org/10.2478/BF02479275[Crossref]
  • [10] B. Stuart, W. O. George, P. S. McIntyre Modern Infrared Spectroscopy (John Wiley & Sons, Chichester, 1996)
  • [11] G.D. Soraru, E. Guadagnino, P. Colombo, J. Egan, C. Pontano, J. Am. Ceram. Soc. 85, 1530 (2002) http://dx.doi.org/10.1111/j.1151-2916.2002.tb00432.x[Crossref]
  • [12] H. Marsman, J.-P. Kintziner, NMR Basic Principles and Progress, Band 17 Oxygen-17 and Silicon-29 (Springer-Verlag, Berlin, Heidelberg, New York, 1981)
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-008-0098-0
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