Details
| Original language | English |
|---|---|
| Pages (from-to) | 255-260 |
| Number of pages | 6 |
| Journal | SOLID STATE IONICS |
| Volume | 101-103 |
| Issue number | PART 1 |
| Publication status | Published - Nov 1997 |
| Externally published | Yes |
Abstract
Mesostructured silicas can be obtained from silica solutions or gels containing amphiphilic surfactants as structure-directing agents. Composite materials with hexagonal (MCM-41), cubic (MCM-48), lamellar (MCM-50) and with disordered (LMU-1) topologies are formed in the system CnTMA+-SiO2-KOH-water-ethanol, where CnTMA+ is an alkyltrimethylammonium cation. The first synthesis field diagram obtained at usual preparation conditions (2 d hydrothermal treatment at 110 °C) by systematic variation of both the surfactant (C14TMA+) and the silica concentration is presented. It reveals optimum synthesis conditions for highly ordered materials and interesting implications for the synthesis mechanism.
Keywords
- M41S materials, Mesoporous materials, Porous materials, Structure-directed synthesis, Surfactants
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: SOLID STATE IONICS, Vol. 101-103, No. PART 1, 11.1997, p. 255-260.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Structure-directed materials syntheses
T2 - Synthesis field diagrams for the preparation of mesostructured silicas
AU - Behrens, Peter
AU - Glaue, Andreas
AU - Haggenmüller, Christian
AU - Schechner, Gallus
N1 - Funding information: This work was supported by the Deutsche For-schungsgemeinschaft (Be 1664/3-1), the Fonds der Chemischen Industrie and by a grant from the Riedel-de HaEn AG (Seelze, Germany).
PY - 1997/11
Y1 - 1997/11
N2 - Mesostructured silicas can be obtained from silica solutions or gels containing amphiphilic surfactants as structure-directing agents. Composite materials with hexagonal (MCM-41), cubic (MCM-48), lamellar (MCM-50) and with disordered (LMU-1) topologies are formed in the system CnTMA+-SiO2-KOH-water-ethanol, where CnTMA+ is an alkyltrimethylammonium cation. The first synthesis field diagram obtained at usual preparation conditions (2 d hydrothermal treatment at 110 °C) by systematic variation of both the surfactant (C14TMA+) and the silica concentration is presented. It reveals optimum synthesis conditions for highly ordered materials and interesting implications for the synthesis mechanism.
AB - Mesostructured silicas can be obtained from silica solutions or gels containing amphiphilic surfactants as structure-directing agents. Composite materials with hexagonal (MCM-41), cubic (MCM-48), lamellar (MCM-50) and with disordered (LMU-1) topologies are formed in the system CnTMA+-SiO2-KOH-water-ethanol, where CnTMA+ is an alkyltrimethylammonium cation. The first synthesis field diagram obtained at usual preparation conditions (2 d hydrothermal treatment at 110 °C) by systematic variation of both the surfactant (C14TMA+) and the silica concentration is presented. It reveals optimum synthesis conditions for highly ordered materials and interesting implications for the synthesis mechanism.
KW - M41S materials
KW - Mesoporous materials
KW - Porous materials
KW - Structure-directed synthesis
KW - Surfactants
UR - http://www.scopus.com/inward/record.url?scp=0031275811&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0031275811
VL - 101-103
SP - 255
EP - 260
JO - SOLID STATE IONICS
JF - SOLID STATE IONICS
SN - 0167-2738
IS - PART 1
ER -