Artigo de Periódico
Influence of the extraction methods to remove organic templates from Al-MCM-41 molecular sieves
Fecha
2005Registro en:
0254-0584
v.93 n. 1
Autor
Gomes Junior, W. A.
Cardoso, L. A. M.
Gonzaga, A. R. E.
Aguiar, L. G.
Andrade, Heloysa Martins Carvalho
Gomes Junior, W. A.
Cardoso, L. A. M.
Gonzaga, A. R. E.
Aguiar, L. G.
Andrade, Heloysa Martins Carvalho
Institución
Resumen
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 CO2. 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.