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Complete Oxidation of Zinc Powder. Validation of Kinetics Models

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Abstract

The kinetics of complete oxidation of different samples of zinc powder by air has been investigated by thermogravimetric measurements under isothermal conditions in the range 973–1,173 K. Particles size was in the 63–80 μm range. We succeeded in carrying out the full oxidation of the powders far above the zinc-metal melting point (692.6 K). This phenomenon is linked to the presence of a thin ZnO layer which confines the liquid metal during the oxidation process. Two kinetics models have been verified. The apparent activation energies obtained from the Arrhenius law were 128 kJ mol−1 and 129 kJ mol−1, respectively.

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Acknowledgement

We would like to express our gratitude to Socrates-Erasmus Student Mobility Program since one of us obtained a grant between Jaén University (Spain) and Lyon1 University (France).

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Authors and Affiliations

  1. Departamento de Ingeniería Química, Ambiental y de los Materiales, Universidad de Jaén, Campus Las Lagunillas, 23071, Jaen, Spain

    Juan F. García & Sebastián Sánchez

  2. Laboratoire Hydrazines et Procédés, Lyon1-CNRS-Isochem (Groupe SNPE), UMR 5179, Université Claude Bernard Lyon 1, Bâtiment Berthollet, 22 Avenue Gaston Berger, 69 622, Villeurbanne, France

    Renaud Metz

  3. Institut Charles Gerhardt, UMR 5253 Université Montpellier 2, Composante Physicochimie des Matériaux Organisés Fonctionnels, 319 Bâtiment 11, CC 1700, Place Eugène Bataillon, 34095, Montpellier Cedex 5, France

    Renaud Metz

Authors
  1. Juan F. García
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  2. Sebastián Sánchez
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  3. Renaud Metz
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Correspondence to Juan F. García.

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García, J.F., Sánchez, S. & Metz, R. Complete Oxidation of Zinc Powder. Validation of Kinetics Models. Oxid Met 69, 317–325 (2008). https://doi.org/10.1007/s11085-008-9099-9

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  • DOI: https://doi.org/10.1007/s11085-008-9099-9

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