Details
| Original language | English |
|---|---|
| Title of host publication | Organosilicon Chemistry Set |
| Subtitle of host publication | From Molecules to Materials |
| Publisher | Wiley-Blackwell |
| Pages | 22-26 |
| Number of pages | 5 |
| ISBN (electronic) | 9783527620777 |
| ISBN (print) | 9783527323470 |
| Publication status | Published - 26 Jul 2005 |
Abstract
M41S-type mesostructured materials can be obtained in different topologies from silica gels containing amphiphilic surfactants as structure-directing agents. A part of the silica precursor tetraethoxysilane (TEOS) can be replaced by trialkoxysilanes R-Si(OR')3 such as phenyltrimethoxysilane (PTMOS). This should allow the direct modification of the pore walls during the synthesis process when hydrolyzed PTMOS molecules are able to take part in the condensation process of hydrolyzed TEOS. Series of synthesis experiments, conducted with variation of the concentrations of the silica precursor molecules TEOS and PTMOS as well as of the surfactant CnTMA+ (an alkyltrimethylammonium cation) establish a synthesis field diagram (SFD) which shows the educt concentration regions from which different product structures form. The effect of the PTMOS molecules on mesostructure formation can be determined by comparing this SFD with another one which was established under the same conditions without using a trialkoxysilane.
Keywords
- M41s materials, Mesoporous materials, Mesostructured materials, Structure-directed synthesis, Trialkoxysilanes
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
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Organosilicon Chemistry Set: From Molecules to Materials. Wiley-Blackwell, 2005. p. 22-26.
Research output: Chapter in book/report/conference proceeding › Contribution to book/anthology › Research › peer review
}
TY - CHAP
T1 - Influence of Substituted Trimethoxysilanes on the Synthesis of Mesostructured Silica Materials
AU - Altmaier, Stephan
AU - Nusser, Konstanze
AU - Behrens, Peter
PY - 2005/7/26
Y1 - 2005/7/26
N2 - M41S-type mesostructured materials can be obtained in different topologies from silica gels containing amphiphilic surfactants as structure-directing agents. A part of the silica precursor tetraethoxysilane (TEOS) can be replaced by trialkoxysilanes R-Si(OR')3 such as phenyltrimethoxysilane (PTMOS). This should allow the direct modification of the pore walls during the synthesis process when hydrolyzed PTMOS molecules are able to take part in the condensation process of hydrolyzed TEOS. Series of synthesis experiments, conducted with variation of the concentrations of the silica precursor molecules TEOS and PTMOS as well as of the surfactant CnTMA+ (an alkyltrimethylammonium cation) establish a synthesis field diagram (SFD) which shows the educt concentration regions from which different product structures form. The effect of the PTMOS molecules on mesostructure formation can be determined by comparing this SFD with another one which was established under the same conditions without using a trialkoxysilane.
AB - M41S-type mesostructured materials can be obtained in different topologies from silica gels containing amphiphilic surfactants as structure-directing agents. A part of the silica precursor tetraethoxysilane (TEOS) can be replaced by trialkoxysilanes R-Si(OR')3 such as phenyltrimethoxysilane (PTMOS). This should allow the direct modification of the pore walls during the synthesis process when hydrolyzed PTMOS molecules are able to take part in the condensation process of hydrolyzed TEOS. Series of synthesis experiments, conducted with variation of the concentrations of the silica precursor molecules TEOS and PTMOS as well as of the surfactant CnTMA+ (an alkyltrimethylammonium cation) establish a synthesis field diagram (SFD) which shows the educt concentration regions from which different product structures form. The effect of the PTMOS molecules on mesostructure formation can be determined by comparing this SFD with another one which was established under the same conditions without using a trialkoxysilane.
KW - M41s materials
KW - Mesoporous materials
KW - Mesostructured materials
KW - Structure-directed synthesis
KW - Trialkoxysilanes
UR - http://www.scopus.com/inward/record.url?scp=84959153267&partnerID=8YFLogxK
U2 - 10.1002/9783527620777.ch4c
DO - 10.1002/9783527620777.ch4c
M3 - Contribution to book/anthology
AN - SCOPUS:84959153267
SN - 9783527323470
SP - 22
EP - 26
BT - Organosilicon Chemistry Set
PB - Wiley-Blackwell
ER -