6533b862fe1ef96bd12c6ab0
RESEARCH PRODUCT
Novel route in the synthesis of MCM-41 containing framework aluminum and its characterization
Klaus K. UngerHui ChenAkihiko MatsumotoMichael GrünKazuo Tsutsumisubject
Inorganic chemistryCationic polymerizationGeneral ChemistryCondensed Matter PhysicsMolecular sieveCatalysischemistry.chemical_compoundAmmonium hydroxideAdsorptionMCM-41chemistryMechanics of MaterialsAlkoxideGeneral Materials ScienceMesoporous materialdescription
Abstract Mesoporous molecular sieve MCM-41 with incorporated structural aluminum (Al-MCM-41) was prepared by hydrolysis of a solution of tetraethoxysilane and aluminum isopropoxide in the presence of ammonia as a catalyst. This method provides Al-MCM-41 of different Si/Al ratios from 13 to 297 corresponding to 0.3–7 mol% Al within an hour. X-ray diffraction and nitrogen adsorption measurements showed that the Al-MCM-41 prepared by this method had a highly ordered structure of pore arrays. Most Al atoms in these samples were incorporated tetrahedrally in the MCM-41 structure, which gave rise to cationic sites in the framework.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-11-01 | Microporous and Mesoporous Materials |