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Titolo:
Characterization and acidic properties of silica pillared titanates
Autore:
Kooli, F; Sasaki, T; Mizukami, F; Watanabe, M; Martin, C; Rives, V;
Indirizzi:
Natl Inst Mat & Chem Res, Tsukuba, Ibaraki 3058565, Japan Natl Inst Mat & Chem Res Tsukuba Ibaraki Japan 3058565 aki 3058565, Japan Natl Inst Res Inorgan Mat, Tsukuba, Ibaraki 3050044, Japan Natl Inst Res Inorgan Mat Tsukuba Ibaraki Japan 3050044 ki 3050044, Japan Univ Salamanca, Dept Quim Inorgan, E-37008 Salamanca, Spain Univ Salamanca Salamanca Spain E-37008 Inorgan, E-37008 Salamanca, Spain
Titolo Testata:
JOURNAL OF MATERIALS CHEMISTRY
fascicolo: 3, volume: 11, anno: 2001,
pagine: 841 - 845
SICI:
0959-9428(2001)11:3<841:CAAPOS>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
METAL-OXIDES; ALUMINUM; INTERCALATION; CLAYS; MONTMORILLONITE; ADSORPTION; GALLIUM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Kooli, F Natl Inst Mat & Chem Res, 1-1 Higashi, Tsukuba, Ibaraki 3058565, Japan Natl Inst Mat & Chem Res 1-1 Higashi Tsukuba Ibaraki Japan 3058565
Citazione:
F. Kooli et al., "Characterization and acidic properties of silica pillared titanates", J MAT CHEM, 11(3), 2001, pp. 841-845

Abstract

Reaction of alkylammonium titanates with tetraethylorthosilicate (TEOS) resulted in the intercalation and polymerization of TEOS between the titanatesheets. After heating to 500 degreesC, the basal spacing of pillared silica titanates increased with increasing length of the alkylamine chains and the amount of silicon intercalated. Although the layers of pillared titanates were expanded by the silica species, and the specific surface area increased, only negligible micropores were formed, suggesting that the interlayerregion was "stuffed" with the pillaring species. The adsorption of pyridine indicated the formation of strong Bronsted acid sites up to 300 degreesC. In addition some basic Lewis sites were detected on silica pillared titanates.

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Documento generato il 21/09/20 alle ore 12:38:43