Abstract
The physicochemical and catalytic properties of Cu-containing crystalline zirconia, obtained via sol–gel synthesis in the presence of Yb3+ ions and polyvinylpyrrolidone, are studied. DTG/DSC, TEM, XRD and BET methods are used to analyze the crystallization, texture, phase uniformity, surface and porosity of ZrO2 nanopowders. It is shown that increasing the copper content (1, 3, and 5 wt % from ZrO2) raises the dehydrogenation activity in the temperature range of 100–400°C and lowers the activation energy of acetaldehyde formation. It is found that the activity of all Cu/t-ZrO2 catalysts grows under the effects of the reaction medium, due to the migration and redispersion of copper.
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Original Russian Text © S.G. Chuklina, A.I. Pylinina, L.I. Podzorova, N.A. Mikhailina, I.I. Mikhalenko, 2016, published in Zhurnal Fizicheskoi Khimii, 2016, Vol. 90, No. 12, pp. 1804–1810.
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Chuklina, S.G., Pylinina, A.I., Podzorova, L.I. et al. Ethanol dehydrogenation on copper catalysts with ytterbium stabilized tetragonal ZrO2 support. Russ. J. Phys. Chem. 90, 2370–2376 (2016). https://doi.org/10.1134/S0036024416120074
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DOI: https://doi.org/10.1134/S0036024416120074