Publication de 4 numéros par an
ISSN Imprimer: 1093-3611
ISSN En ligne: 1940-4360
Indexed in
Reactivity in molten oxonitrates of lanthanum and maganese salts. Synthesis of La1-xMnO3
RÉSUMÉ
The reactivity of each lanthanum and manganese nitrate and chloride is studied in four molten media, NaN03, NaN02, KN03 and KNO2 at 500 °C. The lanthanum salts produce mainly hydroxide and oxychloride. The manganese salts give a variety of compounds, mainly oxides and also oxychloride and sodium manganate. The reaction of the mixed metal salts leads to the perovskite non-stoichiometric La1-xMnO3. The results can be interpreted in terms of acido-basicity of the lanthanum ion and of oxidation pathway of the manganese species. The simultaneous presence of both metal ions in the media forces La1-xMn03 to precipitate. The obtained crystallites are nanosized with a large surface area.
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Matei C., Berger D., Marote P., Stoleriu S., Deloume J.P., Lanthanum-based perovskites obtained in molten nitrates or nitrites, Progress in Solid State Chemistry, 35, 2-4, 2007. Crossref
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Marote Pedro, Durand Bernard, Deloume Jean-Pierre, Reactions of Metal Salts and Alkali Metal Nitrates. Role of the Metal Precursors and Alkali Metal Ions in the Resulting Phase of Zirconia, Journal of Solid State Chemistry, 163, 1, 2002. Crossref
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Harlé V., Vrinat M., Scharff J.P., Durand B., Deloume J.P., Catalysis assisted characterizations of nanosized TiO2–Al2O3 mixtures obtained in molten alkali metal nitrates, Applied Catalysis A: General, 196, 2, 2000. Crossref
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Vázquez-Vázquez Carlos, Arturo López-Quintela M., Solvothermal synthesis and characterisation of La1−xAxMnO3 nanoparticles, Journal of Solid State Chemistry, 179, 10, 2006. Crossref
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Vradman Leonid, Zana Jonatan, Kirschner Alon, Herskowitz Moti, Synthesis of LaMnO3 in molten chlorides: effect of preparation conditions, Physical Chemistry Chemical Physics, 15, 26, 2013. Crossref
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Sfirloaga Paula, Poienar Maria, Malaescu Iosif, Lungu Antoanetta, Vlazan Paulina, Perovskite type lanthanum manganite: Morpho-structural analysis and electrical investigations, Journal of Rare Earths, 36, 5, 2018. Crossref