Specific surface area and chemical reactivity of quartz powders during mechanical processing (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Specific surface area and chemical reactivity of quartz powders during mechanical processing (Articolo in rivista) (literal)

Anno

• 2011-01-01T00:00:00+01:00 (literal)

Alternative label

• Meloni P., Carcangiu G., Delogu F. (2011)
  Specific surface area and chemical reactivity of quartz powders during mechanical processing
  in Materials research bulletin
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Meloni P., Carcangiu G., Delogu F. (literal)

Pagina inizio

• 146 (literal)

Pagina fine

• 151 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

• doi:10.1016/j.materresbull.2011.09.014 Copright 2011 Elsevier Ltd. Available online 21/09/2011 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 47 (literal)

Rivista

• Materials research bulletin (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 6 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Dipartimento di Ingegneria Chimica e Materiali, Università degli Studi di Cagliari (literal)

Titolo

• Specific surface area and chemical reactivity of quartz powders during mechanical processing (literal)

Abstract

• The present work focuses on the specific surface area increase, and on the related chemical reactivity enhancement of quartz powders submitted to mechanical processing. The mechanical treatment was carried out in a suitably developed ball mill allowing the control of the frequency and energy of the impacts between ball and reactor. The specific surface area was directly measured by nitrogen physisorption, whereas electron microscopy was used to determine the size distribution of powder particles. Based on the experimental results, a simplified mathematical model was developed to describe the process of specific surface area increase on a phenomenological basis. The model permits to gain valuable information on the amount of powder processed in individual impacts. The density of reactive centers at the surface of powder particles was also estimated by using the neutralization of a free radical as a test reaction. It is shown that the surface density of reactive centers increases with the energy of collisions. (literal)

Prodotto di

• Caratterizzazione di materiali litoidi e manufatti dell'antichità (TA.P07.015.006) (Modulo)
• Institute of environmental geology and geoengineering (IGAG) (Istituto)

Autore CNR

• GIANFRANCO CARCANGIU (Unità di personale interno)

Insieme di parole chiave

• Parole chiave di "Specific surface area and chemical reactivity of quartz powders during mechanical processing" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute of environmental geology and geoengineering (IGAG) (Istituto)
• Caratterizzazione di materiali litoidi e manufatti dell'antichità (TA.P07.015.006) (Modulo)

Autore CNR di

• GIANFRANCO CARCANGIU (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Materials research bulletin (Rivista)

Insieme di parole chiave di

• Parole chiave di "Specific surface area and chemical reactivity of quartz powders during mechanical processing" (Insieme di parole chiave)