http://www.cnr.it/ontology/cnr/individuo/prodotto/ID281936
Porous apatites as novel high temperature sorbents for carbon dioxide (Articolo in rivista)
- Type
- Label
- Porous apatites as novel high temperature sorbents for carbon dioxide (Articolo in rivista) (literal)
- Anno
- 2014-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.cej.2014.05.070 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Landi E.; Riccobelli S.; Sangiorgi N.; Sanson A.; Doghieri F.; Miccio F. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://www.scopus.com/inward/record.url?eid=2-s2.0-84903443708&partnerID=q2rCbXpz (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Note
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- CNR-ISTEC, National Research Council, Institute of Science and Technology for Ceramics, Via Granarolo 64, 48018 Faenza, Italy; DICAM, Alma Mater Studiorum Università di Bologna, Bologna, Italy (literal)
- Titolo
- Porous apatites as novel high temperature sorbents for carbon dioxide (literal)
- Abstract
- Synthetic hydroxy-apatite was tested as a potential new material for CO2 capture at high temperature,
over the operation limit of CaO-based sorbents. Some porous granules of hydroxy-apatite were prepared
ad hoc. They were shown to absorb CO2 upon dehydroxylation in the very high temperature range of
900-1200 ?C, resulting in A-type carbonated apatite. No appreciable decay of the absorbing capacity
was observed with a higher number of absorbing-desorbing cycles, differently from what happens in a
conventional chemical sorbent, e.g. calcined natural calcium carbonate. The CO2 carrying capacity was
maximum at 1000-1100 ?C and very close to the theoretical limit of 2.6% by mass. The macro-granule
porosity network appeared to be effective in making the sites available for CO2 capture. At first glance,
the process appeared to be chemically controlled. The pre-treatment temperature of the porous granules
also had an impact on the sorption capacity. As a first proof of concept, the results obtained by
thermogravimetric analysis, and supported by FTIR and XRD analysis, were confirmed by tests carried
out in a laboratory-scale reactor, operated as a fixed bed. (literal)
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