Ion exchange synthesis of lanthanum zirconate
| Autor: | E. A. Bovina, F. Kh. Chibirova, D. V. Tarasova |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Zirconium
Materials science Ion exchange General Chemical Engineering Inorganic chemistry Metals and Alloys Pyrochlore chemistry.chemical_element HYDROSOL engineering.material law.invention Amorphous solid Inorganic Chemistry chemistry.chemical_compound chemistry law Materials Chemistry Lanthanum Zirconyl chloride engineering Crystallization |
| Zdroj: | Inorganic Materials. 51:923-927 |
| ISSN: | 1608-3172 0020-1685 |
| DOI: | 10.1134/s0020168515090022 |
| Popis: | We have studied the formation of lanthanum zirconate through ion exchange in aqueous solutions of lanthanum and zirconyl chlorides and the AV-17-8 anion exchanger. The results demonstrate that the ion exchange leads to the formation of hydrosol of an amorphous lanthanum zirconium compound in the form of spherical particles about 4 nm in diameter. Heat treatment of the hydrosol at 700°C leads to crystallization of lanthanum zirconate with the fluorite structure, which transforms into the pyrochlore structure at higher temperatures. |
| Databáze: | OpenAIRE |
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