Tailoring the Hydrophobic Character of Mesoporous Silica by Silylation for VOC Removal (Articolo in rivista)

Type
Label
  • Tailoring the Hydrophobic Character of Mesoporous Silica by Silylation for VOC Removal (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1080/01496391003609155 (literal)
Alternative label
  • Batonneau-Gener, I; Yonli, A; Trouve, A; Mignard, S; Guidotti, M; Sgobba, M (2010)
    Tailoring the Hydrophobic Character of Mesoporous Silica by Silylation for VOC Removal
    in Separation science and technology (Print); Dekker, New York (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Batonneau-Gener, I; Yonli, A; Trouve, A; Mignard, S; Guidotti, M; Sgobba, M (literal)
Pagina inizio
  • 768 (literal)
Pagina fine
  • 775 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 45 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Catalyse Chim Organ Lab, UMR6503, F-86022 Poitiers, France Univ Milan, CNR, Dept Inorgan Chem, Milan, Italy (literal)
Titolo
  • Tailoring the Hydrophobic Character of Mesoporous Silica by Silylation for VOC Removal (literal)
Abstract
  • MCM-41 and non-ordered mesoporous silica were modified using hexamethyl-disilazane (HMDS). The hydrophobic and hydrophilic properties of grafted materials were studied and compared to a purely all silica BEA zeolite by using competitive and noncompetitive water toluene adsorption. A linear correlation between the silylation degree and the hydrophobicity measurements has been found for MCM-41 materials. Even if highly silylated MCM-41 material have more hydrophilic sites (silanol groups) than all silica zeolite, water molecule condensation is not observed because these sites are isolated. Thus, the highly silylated MCM-41 sample exhibits not only hydrophobicity 2.3 times higher than all silica BEA zeolite but also possesses a storage capacity for toluene and chlorobenzene 3 times higher than this zeolite. In competition with water, the organic molecule (toluene or chlorobenzene) adsorption is always favored even if water adsorption is enhanced by chlorobenzene polarity. (literal)
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