Superacid (H0 ≥ –14.52) ternary Zr35Si53Al12 and Zr21Si67Sn11 oxides have been studied by X-ray photoelectron spectroscopy. The high-energy shifts of Zr3d levels indicate the electron density shift from zirconium to silicon atoms, which is facilitated by the presence of tetrahedrally coordinated Al3+ and Sn4+ ions in Zr4+ environment. Models of the superacid L-sites that include coordinatively unsaturated zirconium ions are proposed.
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Translated from Teoretychna ta Eksperymentalna Khimiya, Vol. 58, No. 4, pp. 243-247, July-August, 2022.
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Inshyna, O.I., Prudius, S.V. & Brei, V.V. Superacid L-Sites on the Surface of Ternary ZrO2-SiO2-Al2O3 and ZrO2-SiO2-SnO2 Oxides. Theor Exp Chem 58, 269–275 (2022). https://doi.org/10.1007/s11237-022-09744-3
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DOI: https://doi.org/10.1007/s11237-022-09744-3