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P. D. L. Mercera, J. G. Van Ommen, E. B. M. Doesburg, A. J. Burggraaf and J. R. H. Ross, “Zirconia as a Support for Catalysts: Evolution of the Texture and Structure on Calcination in Air,” Applied Catalysis, Vol. 57, No. 1, 1990, 127-148. doi:10.1016/S0166-9834(00)80728-9

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• TITLE: Synthesis and Characterization of Alumina-Zirconia Powders Obtained by Sol-Gel Method: Effect of Solvent and Water Addition Rate

  AUTHORS: Julio Del Angel, Alberto F. Aguilera, Ignacio R. Galindo, Merced Martínez, Tomas Viveros

  KEYWORDS: Alumina-Zirconia; Mixed Oxides; Sol Gel Method; Effect of Solvent; Water Addition Rate

  JOURNAL NAME: Materials Sciences and Applications, Vol.3 No.9, September 27, 2012

  ABSTRACT: The influence of solvent and the rate of addition of water on the characteristics of alumina-zirconia powders obtained by sol-gel method were investigated. The Al2O3-ZrO2 powders (1:1 molar ratio) were prepared using aluminum tri-sec-butoxide and zirconium n-propoxide as precursors. Ethanol (EtOH), isopropanol (iPrOH) and isobutanol (iBuOH) were used as solvents. The Al2O3-ZrO2 powders were characterized by nitrogen physisorption (SBET), Fourier transformed infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Prepared oxides calcined at 700℃ showed high specific surface area (200 - 240 m2/g). Obtained results suggest that the homogeneity of the mixed oxides is favored by using a water addition rate of 0.06 and 0.10 mL/min with ethanol as solvent.