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Exploring the oxidation behavior of undiluted and diluted iron particles for energy storage : Mössbauer spectroscopic analysis and kinetic modeling

Titelangaben

Spielmann, Jonas ; Braig, Daniel ; Streck, Antonia ; Gustmann, Tobias ; Kuhn, Carola ; Reinauer, Felix ; Kurnosov, Alexander ; Leubner, Oliver ; Potapkin, Vasily ; Hasse, Christian ; Deutschmann, Olaf ; Etzold, Bastian J. M. ; Scholtissek, Arne ; Kramm, Ulrike I.:
Exploring the oxidation behavior of undiluted and diluted iron particles for energy storage : Mössbauer spectroscopic analysis and kinetic modeling.
In: Physical Chemistry Chemical Physics. Bd. 26 (2024) . - S. 13049-13060.
ISSN 1463-9084
DOI: https://doi.org/10.1039/D3CP03484D

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Abstract

Iron is an abundant and non-toxic element that holds great potential as energy carrier for large-scale and long-term energy storage. While from a general viewpoint iron oxidation is well-known, the detailed kinetics of oxidation for micrometer sized particles are missing, but required to enable large-scale utilization for energy production. In this work, iron particles are subjected to temperature-programmed oxidation. By dilution with boron nitride a sintering of the particles is prevented enabling to follow single particle effects. The mass fractions of iron and its oxides are determined for different oxidation times using Mössbauer spectroscopy. On the basis of the extracted phase compositions obtained at different times and temperatures (600–700 °C), it can be concluded that also for particles the oxidation follows a parabolic rate law. The parabolic rate constants are determined in this transition region. Knowledge of the particle size distribution and its consideration in modeling the oxidation kinetics of iron powder has proven to be crucial.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Institutionen der Universität: Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen > Bayerisches Forschungsinstitut für Experimentelle Geochemie und Geophysik - BGI
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie
Eingestellt am: 02 Jun 2025 12:53
Letzte Änderung: 02 Jun 2025 12:53
URI: https://eref.uni-bayreuth.de/id/eprint/93831