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Titolo:
Hybrid ethane-siloxane mesoporous materials with cubic symmetry
Autore:
Guan, SY; Inagaki, S; Ohsuna, T; Terasaki, O;
Indirizzi:
Toyota Cent Res & Dev Labs Inc, Nagakute, Aichi 4801192, Japan Toyota CentRes & Dev Labs Inc Nagakute Aichi Japan 4801192 801192, Japan Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan Tohoku Univ Sendai Miyagi Japan 9808577 es, Sendai, Miyagi 9808577, Japan Tohoku Univ, Grad Sch Sci, Dept Phys, Sendai, Miyagi 9808578, Japan TohokuUniv Sendai Miyagi Japan 9808578 ys, Sendai, Miyagi 9808578, Japan Tohoku Univ, JST, CREST, Sendai, Miyagi 9808578, Japan Tohoku Univ SendaiMiyagi Japan 9808578 ST, Sendai, Miyagi 9808578, Japan
Titolo Testata:
MICROPOROUS AND MESOPOROUS MATERIALS
, volume: 44, anno: 2001,
pagine: 165 - 172
SICI:
1387-1811(200106)44:<165:HEMMWC>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOLECULAR-SIEVES; ORGANIC GROUPS; CHANNEL WALLS; SILICA; ORGANOSILICAS; FRAMEWORKS; CRYSTAL;
Keywords:
mesoporous material; organic-inorganic hybrid; cubic; HMM-3;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Inagaki, S Toyota Cent Res & Dev Labs Inc, 41-1 Aza Yokomichi, Nagakute, Aichi 4801192, Japan Toyota Cent Res & Dev Labs Inc 41-1 Aza Yokomichi Nagakute Aichi Japan 4801192
Citazione:
S.Y. Guan et al., "Hybrid ethane-siloxane mesoporous materials with cubic symmetry", MICROP M M, 44, 2001, pp. 165-172

Abstract

The structure of and synthesis conditions for an organic-inorganic hybrid mesoporous material, HMM-3, containing ethane fragments (-CH2CH2-) within the pore walls were studied. High resolution transmission electron microscope images and electron diffraction patterns obtained for different crystal axes of HMM-3 indicated that it was of the cubic Pm-3n space group, similar to mesoporous silica SBA-1. Scanning electron micrographs of HMM-3 in different directions confirmed that all of the produced HMM-3 particles had the crystal-like external morphology of a decaoctahedron (18-hedron) with six square {1 0 0} and 12 hexagon {1 1 0} planes with a cubic symmetry. The synthesis conditions for HMM-3 were optimized in a synthesis system comprising 1,2-bis(trimethoxysilyl)ethane (BTME), hexadecyltrimethylammonium chloride (C(16)TMA), sodium hydroxide (NaOH), and water (H2O). The highly ordered HMM-3 material was obtained at 95 degreesC with the mixture ratio of BTME:C(16)TMA:NaOH:H2O = 5.27:4.79:12:1773. The C(16)TMA/BTME ratio and C(16)TMA concentration affected the structural order of the produced mesophase, Only the cubic Pm-3n phase was formed even though the C(16)TMA/BTME ratio and theC(16)TMA concentration were varied with in wide ranges at 95 degreesC. (C)2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 20/09/20 alle ore 09:19:45