{"title":"Superacid L-Sites on the Surface of Ternary ZrO2-SiO2-Al2O3 and ZrO2-SiO2-SnO2 Oxides","authors":"O. I. Inshyna, S. V. Prudius, V. V. Brei","doi":"10.1007/s11237-022-09744-3","DOIUrl":null,"url":null,"abstract":"<div><div><p>Superacid (H<sub>0</sub> ≥ –14.52) ternary Zr<sub>35</sub>Si<sub>53</sub>Al<sub>12</sub> and Zr<sub>21</sub>Si<sub>67</sub>Sn<sub>11</sub> 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 Al<sup>3+</sup> and Sn<sup>4+</sup> ions in Zr<sup>4+</sup> environment. Models of the superacid L-sites that include coordinatively unsaturated zirconium ions are proposed.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 4","pages":"269 - 275"},"PeriodicalIF":0.7000,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Theoretical and Experimental Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11237-022-09744-3","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 1
Abstract
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.
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.
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