TỔNG HỢP ALUMINOSILICAT MAO QUẢN TRUNG BÌNH TỪ MẦM ZEOLIT X TRONG MÔI TRƯỜNG AXIT

Abstract

Mesoporous aluminosilicates assembled from zeolite X seeds with the molar compositions of 4Na₂O.Al₂O₃.4SiO₂.160H₂O and having three-dimensional (3D) structures were synthesized successfully from metakaolin in the presence of nonionic octyl-phenyl polyethylene ether (Triton X -100) in acid media. The effect of stir time on the structure of materials was investigated. These materials were characterized by nitrogen adsorption isotherm, TEM, IR and TGA-DSC. The results indicated that the material synthesized with stir time of 20 hours has wormhole mesostructure with the narrow porous size distribution of 3.6 nm, BET surface area of 692 m²/g and porous volume of 0.79 cm³/g.