PREPARATION AND CHARACTERIZATION OF TITANIA-PILLARED MONTMORILLONITE

Yimin Zhang, Shaoxian Song (), Min Zhang and Biyang Tuo
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Yimin Zhang: Faculty of Resources and Environmental Engineering, Wuhan University of Science and Technology, Av. Heping 947, 430081, Wuhan, China
Shaoxian Song: Instituto de Metalurgia, Universidad Autónoma de San Luis Potosi, Av. Sierra Leona 550, San Luis Potosi, C. P. 78210, Mexico
Min Zhang: Faculty of Resources and Environmental Engineering, Wuhan University of Science and Technology, Av. Heping 947, 430081, Wuhan, China
Biyang Tuo: Faculty of Resources and Environmental Engineering, Wuhan University of Science and Technology, Av. Heping 947, 430081, Wuhan, China

Surface Review and Letters (SRL), 2008, vol. 15, issue 03, 329-336

Abstract: In this work, aTi-pillared montmorillonite with high thermal stability has been prepared by using aNa-montmorillonite as the host clay and polyhydroxy-titania ions as the pillaring precursor. The formation ofTi-pillared montmorillonite has been confirmed from the characterizations through X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric–differential scanning calorimeter, and specific surface area analyses. In the preparation ofTi-pillared montmorillonite several parameters, such as the type of solvent in which the synthesis is realized, the ratio of polyhydroxy-titania ions and montmorillonite, the intercalation time, the calcining temperature, and calcining time, were tested to understand their effects on the basal spacing. It was shown that this method could produce aTi-pillared montmorillonite with the basal spacing of 3.74 nm, specific surface area of 409 m2/g, and mean pore size of 2.94 nm, as well as a high thermal stability up to 900°C.

Keywords: Pillared montmorillonite; titania; basal spacing; water–acetone mixture; FTIR analysis; TG analysis (search for similar items in EconPapers)
Date: 2008
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DOI: 10.1142/S0218625X08011421

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