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Thermochemical reduction of iron oxide powders with hydrogen: Review of selected thermal analysis studies

Fradet, Quentin and kurnatowska, Michalina and Riedel, Uwe (2023) Thermochemical reduction of iron oxide powders with hydrogen: Review of selected thermal analysis studies. Thermochimica Acta, 726, p. 179552. Elsevier. doi: 10.1016/j.tca.2023.179552. ISSN 0040-6031.

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Official URL: https://www.sciencedirect.com/science/article/pii/S0040603123001211?via%3Dihub


The reduction of iron oxide with hydrogen is a much-studied research topic, whose interest is growing even more with the emergence of new applications, for example the hydrogen-based direct reduction or for the production of a carbon-free chemical energy carrier. But the numerous works on this topic reveal the great disparity in the authors’ findings, especially regarding the reduction of powders. And while many authors point out this issue, no attempt has been made to converge towards a common understanding of this heterogeneous thermochemical conversion. The endeavor of the present review is to identify the points of consensus, and where discrepancies exist, to explain them. The first part starts with a revision of the latest recommendations on the thermodynamics of iron and its oxides, easing the further comprehension of the reduction process. Then, twelve publications meeting specific criteria on the sample type and reducing agents are systematically confronted. The types of experiments and major experimental conditions have been listed, leading to the identification of typical profiles. Furthermore, chemical pathways are proposed based on these observations and supported by various analytical measurements. Finally, the multiple mathematical approaches to derive kinetic models are compared and discussed. This present review points out the need for appropriate experimental conditions to derive the intrinsic chemistry of the reduction, such as the limitation of water vapor, and also emphasizes the need for more detailed chemical mechanisms.

Item URL in elib:https://elib.dlr.de/195544/
Document Type:Article
Title:Thermochemical reduction of iron oxide powders with hydrogen: Review of selected thermal analysis studies
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Fradet, QuentinUNSPECIFIEDhttps://orcid.org/0000-0003-4968-8494UNSPECIFIED
Riedel, UweUNSPECIFIEDhttps://orcid.org/0000-0001-8682-2192142537393
Date:August 2023
Journal or Publication Title:Thermochimica Acta
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:p. 179552
EditorsEmailEditor's ORCID iDORCID Put Code
Keywords:Iron oxide, Hydrogen reduction, Thermodynamics, Thermal analysis, Kinetic models
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:High-Temperature Thermal Technologies
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Low-Carbon Industrial Processes
Location: Cottbus , Zittau
Institutes and Institutions:Institute of Low-Carbon Industrial Processes
Institute of Low-Carbon Industrial Processes > Low-Carbon Reducing Agents
Deposited By: Fradet, Dr. Quentin
Deposited On:18 Sep 2023 10:14
Last Modified:18 Sep 2023 10:14

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