Meso structured aluminosilicate materials from kaolin clay. Part I - Synthesis and characterization of MSU-S mesostructured aluminosilicat assembled from zeolite Y seeds under basic medium

Abstract

Mesostructured aluminosilicate and composite of mesostructured aluminosilicate with NaY zeolite crystals assembled from faujasitic (FAU) zeolite seeds were synthesized successfully from metakaolin in the presentation of  cetyltrimethylamoniumbromua (CTAB) C16H33N(CH3)3Br. The materials were characterized by XRD, nitrogen adsorption isotherm BET, TEM, SEM, IR, TPD-NH3 and TGA-DSC. The results exhibited hexagonal mesostructure containing FAU zeolite seeds on the walls having a thickness of approximately 1.0 nm, pore size of 3.8 nm, the BET surface area of 782 m²/g and 720 m²/g, respectively, thermal stability until 700^oC. These materials contain both strong and medium acidic sites. They have potential applications in adsorption and catalysis.