SYNTHESIS AND CHARACTERIZATION OF CATALYTIC TITANIAS VIA HYDROLYSIS OF TITANIUM-(IV) ISOPROPOXIDE

Transmission electron microscopy (TEM) studies and nitrogen gas adsorp tion data were used to investigate textural characteristics of titania s prepared via calcination, at 400 degrees C/3 h, of the hydrolysis pr oducts of titanium(IV) isopropoxide in n-heptane or isopropanol solven t. A variety of titanias (anatase form) were produced with different t extural characteristics. The nature of these products was controlled l argely by the synthesis parameters such as water ratio, the addition o f acetic acid, and the solvent used during the hydrolysis. The resulta nt microstructure of the solids is correlated with the pertinent prepa rative conditions. (C) 1998 Elsevier Science B.V.