Following the Structural Changes of Iron Oxides during Reduction under Transient Conditions.

ABSTRACT: Iron is considered as attractive energy carrier in a carbon-free, circular energy economy. The reduction of iron oxide is crucial for its application as a metal fuel as it determines the efficiency of the cycle. Temperature programmed reduction of α-Fe₂O₃ was monitored by complementary X-ray absorption spectroscopy (XAS) and diffraction (XRD) to obtain the phase composition with high time resolution. Synchrotron Mössbauer spectroscopy (SMS) was additionally employed due to its high sensitivity to the different iron species. Theoretical calculations of surface and bulk adsorption processes were performed to establish the potential reaction pathways and the corresponding energy barriers. A kinetic particle model was then developed to bridge the experimental data and the

SUBMITTER: Braun L 

PROVIDER: S-EPMC11660749 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature