6533b82efe1ef96bd12926ea
RESEARCH PRODUCT
Novel pathways for the preparation of mesoporous MCM-41 materials: control of porosity and morphology
Akihiko MatsumotoMichael GrünKazuo TsutsumiKlaus K. Ungersubject
Aqueous solutionStereochemistryChemistryCationic polymerizationGeneral ChemistryCondensed Matter PhysicsMolecular sieveCatalysisChemical engineeringMCM-41Mechanics of MaterialsGeneral Materials ScienceMesoporous materialZeolitePorositydescription
Two novel synthesis routes for the preparation of mesoporous MCM-41 materials are introduced. Both methods use tetra-n-alkoxysilanes such as tetraethoxysilane (TEOS) or tetra-n-propoxysilane (TPS) as a silica source which are added to an aqueous solution of a cationic surfactant in the presence of ammonia as catalyst. In this study, n-alkyltrimethylammonium bromides and n-alkylpyridinium chlorides were employed as templates. The addition of an alcohol (e.g. ethanol or isopropanol) leads to a homogeneous system which allows the formation of spherical MCM-41 particles. The main advantages of these methods are short reaction times, excellent reproducibility and easy preparation of large batches.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-02-01 | Microporous and Mesoporous Materials |