The effect of alkali metal ions (Na+ or K+) on the acid–base and catalytic properties of Zn-Mg(Zr)Si oxide systems in the process of obtaining 1,3-butadiene from ethanol was studied. It was found that the modification of Zn-MgSi oxide systems promotes an increase in the 1,3-butadiene selectivity (at temperatures ≥670 K) by reducing the number of formation sites of by-products. In the composition of Zn-ZrSi oxide systems, alkali metal cation additives lead to a decrease in the ethene and diethyl ether selectivity due to a decrease in the content of strong acid sites that are active in the ethanol dehydration reaction.
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Acknowledgement
The research was performed with the partial financial support of research programs of the NAS of Ukraine “Support of priority areas of research”, KPKVK 6541230 (0120U101212), “Fundamental problems of creating new substances and materials of chemical production” (0119U101562), and project of research works of young scientists of the National Academy of Sciences of Ukraine (0121U111813).
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Translated from Teoretychna ta Eksperymentalna Khimiya, Vol. 57, No. 6, pp. 375-381, November-December, 2021.
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Larina, O.V., Kyriienko, P.I., Morozov, O.V. et al. Influence of Modification of Zn-Mg(Zr)Si Oxide Systems by Sodium and Potassium on their Catalytic Properties in the Process of Obtaining 1,3-Butadiene from Ethanol. Theor Exp Chem 57, 443–450 (2022). https://doi.org/10.1007/s11237-022-09714-9
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DOI: https://doi.org/10.1007/s11237-022-09714-9