Preparation and characterization of alumina-zirconia composite material with different acid ratios by the sol-gel method

• Authors: Ozgecan Ergu , Metin Gürü , Canan Cabbar
• Languages of publication: EN

Abstracts

EN

Alumina-zirconia composite materials were produced with different acid ratios by the sol-gel method using aluminum isopropoxide and zirconium chloride. The composites were produced by changing acid/alkoxside ratio in alumina. The composite materials were calcinated at 600°C, 900°C and 1300°C. The effects of acid concentration and calcination temperature on the surface area and pore radius were determined from the nitrogen adsorption isotherm at 77 K. The density of the composites was also measured. The minimum density of produced material was recorded as 1.35 g cm−3 at an acid/alkoxside ratio of 0.2. The highest specific surface area and pore diameter of the lightest material are 191.86 m2 g−1 and 18.4 Ǻ, respectively. Although pore diameter and specific surface area are not changed at any of the experimental temperatures which were tested by decreasing acid/alkoxside ratio, the density is slightly increased. However, it was observed that the calcination temperature significantly affects the surface area and density of the material. [...]

Keywords

EN

Alumina-zirconia composite material; Sol-gel method; BET; Porosity

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2008
• Volume: 6
• Issue: 3
• Pages: 482-487

Dates

published

1 - 9 - 2008

online

11 - 8 - 2008

Contributors

author

Ozgecan Ergu

• Department of Chemical Engineering, Gazi University, 06570, Ankara, Turkey

author

Metin Gürü

• Department of Chemical Engineering, Gazi University, 06570, Ankara, Turkey

author

Canan Cabbar

• Department of Chemical Engineering, Gazi University, 06570, Ankara, Turkey

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Identifiers

DOI

10.2478/s11532-008-0047-y