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NMR spectroscopic study of hydrolyzed aluminum ion adsorption on silica gel |
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| Authors: | Yu. V. Sidorov O. I. Gnezdilov K. A. Burkov O. G. Us’yarov |
| Affiliation: | (1) St. Petersburg State University, Universitetskii pr. 26, Staryi Peterhof, St. Petersburg, 198504, Russia;(2) Zavoiskii Physicotechnical Institute, Kazan Scientific Center, Russian Academy of Sciences, Sibirskii trakt 10/7, Kazan, 420029 Tatarstan, Russia |
| Abstract: | Aluminum ion adsorption on the surface of nanodisperse silica particles is investigated by NMR spectroscopy as depending on Al(NO)3 content in solutions. It is established that Al(H2O 6 3+ aquacomplexes are poorly sorbed by silica gel. The highest sorbability is inherent in AlO4Al12(OH)24(H2O 12 7+ hydroxocomplex. The transfer of this complex to an adsorption layer is accompanied by its partial decomposition and the distortion of the tetrahedral geometry of the environment of the central aluminum atom. |
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