Synthesis and properties of spherical catalysts TiO2-SiO2/МхOy (M = Co and Cr)

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2017 | Brichkov, Anton S.

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Synthesis and properties of spherical catalysts TiO2-SiO2/МхOy (M = Co and Cr)	576 KB	Adobe Acrobat PDF	Read	Download
DOI Доступ к ресурсу на сайте издателя			10.1063/1.5009832

Title: Synthesis and properties of spherical catalysts TiO2-SiO2/МхOy (M = Co and Cr)
Creator: Rogacheva, Anastasiya
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Brichkov, Anton S.
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Larina, Tatyana
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Paukshtis, Еvgeny A.
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Kozik, Vladimir V.
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Shamsutdinova, Anastasiya
Date: 2017
DOI: 10.1063/1.5009832
Description: Layered spherical materials were obtained, the inner layer of which is represented by oxides of cobalt or chromium, and external oxides of titanium and silicon. D-metals were fixed on the surface of the polymer substrate through sorption from aqueous solutions of the corresponding salts. The outer layer of the oxide titanium-silicon matrix was obtained by the sol-gel method. Aggregative stability of sols was controlled by viscosimetry. The influence of the components on the stability of sol solutions has been established. The time interval for the stability of sols is in the range of 400-1000 h. The laminated structure, material characteristics are studied using 3D-microtomography. The catalytic activity of the obtained TiO2-SiO2/Cr2O3 and TiO2-SiO2/Co3O4 samples was compared to the n-heptane oxidation reaction. The maximum heptane conversion for the TiO2-SiO2/Co3O4 sample is 80 % at a temperature of 600 °C, for the TiO2-SiO2/Cr2O3 sample, the conversion of n-heptane reaches 100 % at 400 °C.