Indian Journal of Science and Technology
Year: 2010, Volume: 3, Issue: 10, Pages: 1048-1051
Sh. Akbarnezhad1 , S. M. Mousavi1 and R. Sarhaddi2*
1 Dept. of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Iran
2 Dept. of Physics, Faculty of Science, University of Birjand, Birjand, Iran
Alumina–titania ceramic membrane with mesopore and narrow pore size distribution was prepared by the sol–gel process. Observations were based on membrane weight loss, morphology, pore size distribution and BET surface area. Thermogravimetric analysis (TGA), Scanning Electron Microscopy (SEM) and N2 adsorption-desorption analysis were employed for the membrane characterization. TGA curve shows that the suitable temperature for calcination of alumina-titania membrane is at 600°C. The SEM morphology displays a smooth and free-crack layer of alumina-titania membrane after calcination at temperature of 600°C. Furthermore, the membrane was also successfully coated with a good adhesion to complement with support. The thickness of the membrane layer was estimated at 4 µm. N2 adsorption-desorption confirms the existence of a mesoporous structure for membrane as BET surface area and average pore size of the membrane layer were 292 m2 g-1 and 1.8 nm respectively.
Keywords: Alumina-titania, ceramic membrane, sol-gel process, dip coating.
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