Dehydration-Reduction Coupling Effects in the Transformation of Goethite to Magnetite

  • M. L. Garcia-Gonzalez
  • P. Grange
  • B. Delmon

Abstract

The quality of γ-.Fe2O3 (maghemite) used in magnetic tapes strongly depends on the various stages of preparation. The present communication concerns the first stages, namely dehydration and reduction of goethite (γ-FeOOH) to magnetite (Fe3O4). We have focused our study on the effect of water pressure on these two stages and on the coupling effect between dehydration and reduction. Particular attention was paid to consequences of this coupling effect on the texture of the products.

Keywords

Hydration Argon Fe2O3 Dehydration Magnetite 

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Copyright information

© Springer Science+Business Media New York 1977

Authors and Affiliations

  • M. L. Garcia-Gonzalez
    • 1
  • P. Grange
    • 1
  • B. Delmon
    • 1
  1. 1.Groupe de Physico-Chimie Minérale et de CatalyseUniversité Catholique de LouvainLouvain-la-NeuveBelgium

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