Synthesis and thermal behavior of Co/AlCe layered double hydroxide
| Autor: | Maksim N. Yapryntsev, Irina G. Ryltsova, Sergei N. Golovin, Konstantin I. Maslakov, Olga E. Lebedeva, S. V. Savilov |
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| Rok vydání: | 2021 |
| Předmět: |
Thermogravimetric analysis
Materials science Coprecipitation chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Metal chemistry.chemical_compound Differential scanning calorimetry General Materials Science Layered double hydroxides General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Cerium chemistry visual_art X-ray crystallography visual_art.visual_art_medium engineering Hydroxide 0210 nano-technology Nuclear chemistry |
| Zdroj: | Solid State Sciences. 111:106498 |
| ISSN: | 1293-2558 |
| DOI: | 10.1016/j.solidstatesciences.2020.106498 |
| Popis: | Cerium-containing cobalt-aluminum layered double hydroxide was successfully synthesized via coprecipitation followed by hydrothermal treatment. Molar ratios of metal cations were predetermined as following: Co2+/(Al3+ + Ce3+) = 3 and Ce3+/(Al3+ + Ce3+) = 0.05. According to X-ray diffraction data, the obtained sample was well crystallized single-phase product with a hydrotalcite-like structure. The presence of cerium was confirmed by elemental analysis. The synthesized material consisted of hexagonal plate-like particles with an average size of 277 nm. The study of thermal behavior showed that the compound decomposed with the formation of oxides mixture, which is typical for layered double hydroxides. Its rehydration ability was expressed very weakly and the “memory effect” was observed only after heat treatment at a temperature not higher than 200 °C. |
| Databáze: | OpenAIRE |
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