Citrate-nitrate auto-combustion synthesis of perovskite-type nanopowders: A systematic approach
作者： F. Deganello , G. Marcì , G. Deganello
DOI: 10.1016/J.JEURCERAMSOC.2008.06.012
关键词: Perovskite (structure) 、 Inorganic chemistry 、 Precipitation (chemistry) 、 Dispersion (chemistry) 、 Cobalt 、 Materials science 、 Combustion 、 Dopant 、 Citric acid 、 Cerium
摘要: Abstract Citrate–nitrate auto-combustion synthesis is used to prepare an iron, a cobalt and cerium-perovskite. The influence of different conditions on the combustion process, phase composition, textural morphological properties studied in detail by X-ray diffraction, nitrogen adsorption scanning electron microscopy. Results show that intensity increases from cerium, cobalt-perovskite. Conversely, decreases thus safety gain process increase using high fuel/oxidant ratios, low pH values or reactors with heat dispersion capacity. High ratios particle size may enhance dopant segregation. Low citric acid/metal nitrates cause precipitation most insoluble compounds segregation dopant. formation temperature perovskite-type structure. are deleterious for composition and/or morphology final product, although at occur.
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