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
  • Landi E.; Riccobelli S.; Sangiorgi N.; Sanson A.; Doghieri F.; Miccio F. (2014)
    Porous apatites as novel high temperature sorbents for carbon dioxide
    in Chemical engineering journal ( Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Landi E.; Riccobelli S.; Sangiorgi N.; Sanson A.; Doghieri F.; Miccio F. (literal)
Pagina inizio
  • 586 (literal)
Pagina fine
  • 596 (literal)
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
  • 254 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 11 (literal)
Note
  • Scopu (literal)
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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