FIELD OF CONCENTRATIONS AND CONDITIONS OF TEMPLATE STRUCTURE FORMATION OF A SILICA MESOPOROUS MOLECULAR SIEVES OF MCM-48 TYPE

摘要

The region of composition and concentration of the reaction mixtures for template structure formation of silica mesomorphous molecular sieves of the MCM-48 type have been determined,the boundary concentrations of the reagents have been determined,and also the effects of synthesis conditions(in particular the ratio of the template and the skeleton-forming elements and the temperature factor)on the structure transformation in the CTAB-TEOS-NaOH-H2O system.Reproducible methods have been developed for the synthesis of highly ordered MCM-48 with minimization of the amount of surfactant and without the use of additional organic substances.