Strongly acidic mesoporous aluminosilicates prepared from zeolite seeds: acylation of anisole with octanyl chloride

Ultrastable acidic mesoporous aluminosilicates (MCM-48-S, MCM-48-SH, MCM-41-S) with mesostructures, strong acidity, and high hydrothermal stability was synthesized from assembly of cetyltriammonium bromide (CTAB) and pre-formed zeolite Beta seed. The catalytic application of the solid acid catalysts (HMCM-41-S and HMCM-48-SH) was demonstrated with the Friedel–Crafts acylation of aromatics. High conversion (>90%) and high selectivity (100%) were obtained.