Effects of Acid on Synthesis of Mesoporous Titania

The mesoporous titania was prepared via Sol-Gel process from Ti(n-C(4)H(9)O)(4)(TBOT) without surfactant templates. Using sulfuric acid or acetic acid as acidity regulator, the TBOT was hydrolyzed in an acidic system, and then its hydrolysate was treated by hydrothermal method. The products were characterized by XRD, N(2) adsorption-desorption isotherm and TG-DSC. The results indicate that mesoporous TiO(2) can be synthesized through selecting acid, controlling acid concentration and supplementing TEA which call reduce the hydrolysis rate of TBOT. The mesoporous TiO(2), prepared with the mole ratio of H(2)SO(4)/TBOT/TEA = 1/1/1, shows a surface area of 176m(2)/g, pore volume of 0.222 cm(3)/g, mean pore size of 5nm, and narrow pore size distribution, and its thermal stability is excellent.