Abstract
Mesoporous silica-supported sulfated zirconia aerogels with different Zr/Si and S/Zr molar ratios were prepared using a one-step preparation. The characterization of these solids was conducted using N2 physisorption at 77 K, X-ray diffraction, mass spectrometry, and sulfur chemical analysis. The isomerization of n-Hexane was used as a catalytic test. Highly improved textural properties were obtained for these solids, and two types of mesopores were observed. Depending on the zirconium content, the size and amount of mesopores are highly affected. The importance of sulfates effectively bonded to Zr(IV) is elucidated, both for achieving high catalytic activity and for a good sulfur thermal stability. The catalytic activity (for a sample prepared with a particular S/Zr ratio) expressed per gram of Zr(IV) is comparable to that of pure sulfated zirconia.
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Akkari, R., Ghorbel, A., Essayem, N. et al. Mesoporous Silica Supported Sulfated Zirconia Prepared by a Sol–Gel Process. J Sol-Gel Sci Technol 33, 121–125 (2005). https://doi.org/10.1007/s10971-005-6712-0
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DOI: https://doi.org/10.1007/s10971-005-6712-0