ISSN 2594-5327
49º Congresso anual — Vol. 49, Num. 1 (1994)
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Resumo
The examination of the available literature on the spinel ferrites revealed that, even though a lot of empirical knowledge exists about ferrites and they are even produced, there is a great scarcity of thermodynamic development on hydrothermal synthesis of those ferrites. In view of this picture, then present paper has been concerned with the development of potential (Eh)-pH and pₐₑ–pH diagrams of the Zn–Fe–H₂O system under autoclave conditions. The resultant diagram reveal that the Eh–pH and pₐₑ–pH domains of the ZnO.Fe₂O₃(c) grow a lot with the increase of the system temperature. It has been gotten a clear visualization of the possibilities and limitations of the hydrothermal synthesis of the zinc ferrite, so that the generated diagrams looks useful for the planning and interpretation of the future experimental work.
Palavras-chave
Zinc ferrite, Hydrothermal synthesis, Thermodynamic diagrams, Eh–pH, Autoclave conditions
Como citar
Ogasawara, Tsuneharu; Silva, Flávio Teixeira da; Andrade, Mônica Calixto de; Dias, Antonio Jose do Nascimento.
HYDROTHERMAL SYNTHESIS OF THE ZINC FERRITE: THERMODYNAMIC ANALYSIS,
p. 4528-4539.
In: 49º Congresso anual,
Rio de Janeiro, Brasil,
1994.
ISSN: 2594-5327, DOI 10.5151/2594-5327-49v9-439-450
