Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7716639 | International Journal of Hydrogen Energy | 2014 | 10 Pages |
Abstract
The sodium manganese mixed ferrite thermochemical cycle Na(Mn1/3Fe2/3)O2/(MnFe2O4 + Na2CO3) for sustainable hydrogen production has been implemented in a solar reactor-receiver, packed with indirectly heated MnFe2O4/Na2CO3 mixture pellets, with the aim of verifying its feasibility and of determining the critical aspects of the process. The reactor operates at nearly constant temperature in the range 750-800 °C; the shift between the hydrogen-producing and regeneration steps is obtained by switching the reactive gas from water to carbon dioxide. Hydrogen produced during 1-h operation of the reactor is in the range of 130-460 μmol/g of mixture, depending on experimental conditions. Compared to other existing prototypes, the implemented process obtains comparable production efficiencies while operating at lower temperature both in the hydrogen production and regeneration phases.
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Authors
Francesca Varsano, Maria Anna Murmura, Bruno Brunetti, Franco Padella, Aurelio La Barbera, Carlo Alvani, Maria Cristina Annesini,