Hydrogen production by water-splitting thermochemical cycle based on manganese ferrite/sodium carbonate reactive system is reported. Two different preparation procedures for manganese ferrite/sodium carbonate mixture were adopted and compared in terms of material capability to cyclical hydrogen production. According to the first procedure, conventionally synthesized manganese ferrite, i.e., high temperature heating in Ar of carbonate/oxide precursors, was mixed with sodium carbonate. The blend was tested inside a temperature programed desorption reactor using a cyclical hydrogen production/material regeneration scheme. After a few cycles, the mixture resulted rapidly passivated and unable to further produce hydrogen. An innovative method that avoids the high temperature synthesis of manganese ferrite is presented. This procedure consists in a set of consecutive thermal treatments of a manganese carbonate/sodium carbonate/iron oxide mixture in different environments (inert, oxidative, and reducing) at temperatures not exceeding . Such material, whose observed chemical composition consists of manganese ferrite and sodium carbonate in stoichiometric amounts, is able to evolve hydrogen during 25 consecutive water-splitting cycles, with a small decrease in cyclical production efficiency.
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e-mail: francesca.varsano@enea.it
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August 2009
Research Papers
Reactive Pellets for Improved Solar Hydrogen Production Based on Sodium Manganese Ferrite Thermochemical Cycle
Carlo Alvani,
Carlo Alvani
C. R. Casaccia,
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italy
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Mariangela Bellusci,
Mariangela Bellusci
C. R. Casaccia,
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italy
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Aurelio La Barbera,
Aurelio La Barbera
C. R. Casaccia,
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italy
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Franco Padella,
Franco Padella
C. R. Casaccia,
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italy
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Marzia Pentimalli,
Marzia Pentimalli
C. R. Casaccia,
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italy
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Luca Seralessandri,
Luca Seralessandri
C. R. Casaccia,
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italy
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Francesca Varsano
Francesca Varsano
C. R. Casaccia,
e-mail: francesca.varsano@enea.it
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italy
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Carlo Alvani
C. R. Casaccia,
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italy
Mariangela Bellusci
C. R. Casaccia,
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italy
Aurelio La Barbera
C. R. Casaccia,
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italy
Franco Padella
C. R. Casaccia,
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italy
Marzia Pentimalli
C. R. Casaccia,
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italy
Luca Seralessandri
C. R. Casaccia,
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italy
Francesca Varsano
C. R. Casaccia,
ENEA-Italian National Agency for New Technologies, Energy and the Environment
, Via Anguillarese 301, 00123 Rome, Italye-mail: francesca.varsano@enea.it
J. Sol. Energy Eng. Aug 2009, 131(3): 031015 (5 pages)
Published Online: July 14, 2009
Article history
Received:
September 18, 2008
Revised:
February 12, 2009
Published:
July 14, 2009
Citation
Alvani, C., Bellusci, M., La Barbera, A., Padella, F., Pentimalli, M., Seralessandri, L., and Varsano, F. (July 14, 2009). "Reactive Pellets for Improved Solar Hydrogen Production Based on Sodium Manganese Ferrite Thermochemical Cycle." ASME. J. Sol. Energy Eng. August 2009; 131(3): 031015. https://doi.org/10.1115/1.3142723
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