Abstract
The preparation of TiO2-pillared saponite was carried out in a CH3COOH aqueous solution. Titanium ion species to intercalate into the interlayer of saponite were obtained by an addition of Ti(C3H7O)4 to an aqueous solution of CH3COOH and by subsequent aging of the solution for a prescribed time. Ti4+-intercalated saponite including organic materials was obtained by ion exchange. After the sample was calcined at 500°C in air, TiO2-pillared saponite was obtained. The resulting TiO2-pillared saponite (Ti-Sapo) possessed surface areas in the range 300–400 m2/g and a sharp pore size distribution with the pore radius of 1.2 nm. The basal spacing of the product heated at temperature >250°C was about 2.45 nm. The pillar height of TiO2 in the Ti-Sapo was estimated to be 1.5 nm.
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Kitayama, Y., Kodama, T., Abe, M. et al. Synthesis of Titania Pillared Saponite in Aqueous Solution of Acetic Acid. Journal of Porous Materials 5, 121–126 (1998). https://doi.org/10.1023/A:1009637219763
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DOI: https://doi.org/10.1023/A:1009637219763