http://www.cnr.it/ontology/cnr/individuo/prodotto/ID53772
Study of I-/I2 Poisoning of Fe2O3-Based Catalysts for the H2SO4 Decomposition in the Sulphur-iodine Cycle for Hydrogen Production. (Articolo in rivista)
- Type
- Label
- Study of I-/I2 Poisoning of Fe2O3-Based Catalysts for the H2SO4 Decomposition in the Sulphur-iodine Cycle for Hydrogen Production. (Articolo in rivista) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Vincenzo Barbarossa; Sergio Brutti; Bruno. Brunetti; Maurizio Diamanti; Giuseppe Ricci. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Barbarossa: ENEA
Brutti : Università La sapienza
Damanti: ENEA
Ricci: ENEA (literal)
- Titolo
- Study of I-/I2 Poisoning of Fe2O3-Based Catalysts for the H2SO4 Decomposition in the Sulphur-iodine Cycle for Hydrogen Production. (literal)
- Abstract
- The poisoning effect of I-/I2 mixtures on ferrous oxide based catalysts was investigated. These catalysts
were used in the sulfuric acid thermal decomposition that is the highest endothermic step in the sulfur-iodine
thermochemical cycle for hydrogen production by water splitting. This decomposition reaction needs a
temperature as high as 1100 K to occur with a convenient thermodynamic yield for SO2 formation, and it is
affected by kinetic limitations. Therefore only the use of a suitable catalyst allows for a large decrease in the
H2SO4 decomposition temperature and attaining reaction yields close to the thermodynamic limits. I2 and HI
present even in traces in the sulfuric acid feeding stream could lead to the poisoning of the catalyst used for
the decomposition process and must therefore be minimized. In this study, two Fe2O3 catalysts supported on
quartz wool and on alumina were used in the temperature range 873-1073 K in ordinary pressure conditions.
The SO2 formation rates were measured before and after the catalyst poisoning. Kinetics measurements and
scanning electron microscopy (SEM) analysis show that I-/I2 contamination reduced the catalytic activity by
modifying its surface properties. (literal)
- Prodotto di
- Autore CNR
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