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

Title data

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. Vol. 26 (2024) . - pp. 13049-13060.
ISSN 1463-9084
DOI: https://doi.org/10.1039/D3CP03484D

Official URL:

Abstract in another language

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.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Institutions of the University:	Research Institutions > Central research institutes > Bavarian Research Institute of Experimental Geochemistry and Geophysics - BGI
Result of work at the UBT:	Yes
DDC Subjects:	500 Science > 550 Earth sciences, geology
Date Deposited:	02 Jun 2025 12:53
Last Modified:	02 Jun 2025 12:53
URI:	https://eref.uni-bayreuth.de/id/eprint/93831