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Chemical aspects of the water-splitting thermochemical cycle based on sodium manganese ferrite

TitoloChemical aspects of the water-splitting thermochemical cycle based on sodium manganese ferrite
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2012
AutoriVarsano, F., Padella F., Alvani C., Bellusci M., and La Barbera A.
RivistaInternational Journal of Hydrogen Energy
Parole chiaveCarbon dioxide, Chemical process, High temperature X-ray diffraction, HT-XRD, Hydrogen production, In-situ, Manganese ferrites, MnFe <sub>2</sub>O <sub>4</sub>, Multistep reactions, Phase stability diagram, Sodium, Solid substrates, Structural transformation, Temperature range, Thermochemical cycles, Water splitting, X ray diffraction

Water thermolysis by means of the sodium manganese ferrite cycle for sustainable hydrogen production is reviewed, with particular focus on known elementary chemical processes taking place on solid substrates in the 600-800 °C temperature range. For the purpose, in-situ high temperature x-ray diffraction technique has been utilized to observe structural transformations produced by both temperature and reactive environment. The water-splitting reaction and the regeneration of initial reactants are described as multi-step reactions, in which the role of carbon dioxide, through carbonation and de-carbonation reactions is highlighted. A thermodynamic phase stability diagram is reported for the system MnFe 2O 4/Na 2CO 3/CO 2. ©, 2012 Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.


cited By 11

Citation KeyVarsano201211595