ZrO2-SiO2-Al2O3和ZrO2-SiO2-SnO2三元氧化物表面的超酸性l -位

IF 0.7 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY Theoretical and Experimental Chemistry Pub Date : 2022-12-14 DOI:10.1007/s11237-022-09744-3

O. I. Inshyna, S. V. Prudius, V. V. Brei

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引用次数: 1

摘要

用x射线光电子能谱研究了超强酸(H0≥-14.52)三元Zr35Si53Al12和Zr21Si67Sn11氧化物。Zr3d能级的高能位移表明电子密度从锆原子向硅原子转移，这是由于Zr4+环境中四面体配位的Al3+和Sn4+离子的存在促进了电子密度的转移。提出了含配位不饱和锆离子的超酸性l位模型。

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Superacid L-Sites on the Surface of Ternary ZrO2-SiO2-Al2O3 and ZrO2-SiO2-SnO2 Oxides

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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来源期刊

Theoretical and Experimental Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

1.60

自引率

10.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Theoretical and Experimental Chemistry is a journal for the rapid publication of research communications and reviews on modern problems of physical chemistry such as: a) physicochemical bases, principles, and methods for creation of novel processes, compounds, and materials; b) physicochemical principles of chemical process control, influence of external physical forces on chemical reactions; c) physical nanochemistry, nanostructures and nanomaterials, functional nanomaterials, size-dependent properties of materials.