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Synthesis and Characterisation of Sulfated Zirconia Sol-Gel Systems

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Abstract

A set of sulfated zirconia xerogels were prepared using a one and two step hydrolysis method, in different vessels (open or closed) and varying the molar ratio R = [HNO3]/[Zr(On-Pr)4]. In order to verify the influence of these variables on the gel time and the final samples, physisorpion, quantitative analysis of the sulfate, DTA and DTG, X-ray diffraction at small (SAXS) and wide (WAXS) angles, and FTIR measurements, were employed. The main differences were found regarding samples with different values of R. For samples with R constant, the preparation method and the kind of container employed only slightly influenced the samples.

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  1. Dipartimento Chimica Fisica—Università Cà Foscari, Calle Larga S. Marta 2137, 30123 Venezia and via Torino 155/b, 30170, Mestre-Venezia, Italy

    A. Minesso, F. Genna, T. Finotto, A. Baldan & A. Benedetti

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  1. A. Minesso
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  2. F. Genna
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  3. T. Finotto
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  4. A. Baldan
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Minesso, A., Genna, F., Finotto, T. et al. Synthesis and Characterisation of Sulfated Zirconia Sol-Gel Systems. Journal of Sol-Gel Science and Technology 24, 197–206 (2002). https://doi.org/10.1023/A:1015328506642

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