Influence of the extraction methods to remove organic templates from Al-MCM-41 molecular sieves

• Published in: Materials chemistry and physics Vol. 93; no. 1; pp. 133 - 137
• Main Authors: Gomes, W.A., Cardoso, L.A.M., Gonzaga, A.R.E., Aguiar, L.G., Andrade, H.M.C.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15-09-2005
• Subjects: Al-MCM-41; Extraction; Supercritical fluid extraction; Template; Extraction; Al-MCM-41; Supercritical fluid extraction; Template
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2005.02.021

The influence of template extraction methods on the structure and physico-chemical properties of Al-MCM-41 molecular sieves has been investigated. Up to 78% of template in Al-MCM-41 could be removed either by extraction with ordinary solvents or methanol-modified supercritical CO
2. Complete template removal was achieved by calcination. Both, solvent and supercritical fluid extraction media influenced the structure, texture and acid properties of the resulting Al-MCM-41 materials and, consequently, their catalytic activity for the Friedel–Crafts acylation of 2-methoxynaphthalene.