The thermal behaviour of the hydroxide mixtures used for the synthesis of MgFe2O4 spinel

E. Traversa*, G. Montesperelli, P. Nunziante, G. Chiozzini

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The thermal behaviour of hydroxide mixtures, precursors to the synthesis of MgFe2O4 spinel powders, was investigated. The mixtures of hydroxides were prepared by coprecipitation reaction from nitrate solutions with an Mg/Fe atomic ratio of 1:2. The results were related to the thermal behaviour of separately precipitated components of the hydroxide mixtures. Samples prepared by mechanically mixing the separately precipitated hydroxides were also studied. The spinel formation temperature was identified by performing XRD analysis on powder samples heated to different temperatures. The presence of spinel from the thermal decomposition of coprecipitated mixtures was detected at a temperature as low as 380°C. The separate formation of MgO and Fe2O3 from the thermal decomposition of mechanical mixtures was observed; nevertheless the formation of MgFe2O4 through a solid state reaction between the oxides was noted at a temperature as low as 500°C.

Original languageEnglish (US)
Pages (from-to)2583-2592
Number of pages10
JournalJournal of Thermal Analysis
Volume38
Issue number12
DOIs
StatePublished - Dec 1992
Externally publishedYes

Keywords

  • hydroxide mixtures
  • MgFeO spinel

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Engineering(all)

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