Abstract:Ti-pillared precursor was prepared by acidic sol-gel method, then calcined at 500℃ for 3 h to get roasted products. XRD, FTIR and SEM were applied to characterize and analyze the pillared-products, and the influencing factors of pillaring were studied. The results indicate that the pillaring process and crystal growing of anatase can be more easily realized by increasing the acid-base ratio of pillaring agents, raising the pillaring temperature and adding proper quantities of alkali. The calcination of Ti-pillared precursor brings the growth of TiO2 grain, at the same time the layer distance is declined. In order to obtain ideal products, the right pillaring conditions are: the acid-base ratio of pillaring agents of 1׃3, pillaring temperature of 65 ℃ and the volume of alkali (2 mol/L) in pillaring liquid of 6 mL.

Key words: Ti-pillared bentonite; acidic sol-gel method; pillaring