| 摘要 |
Synthetic crystalline porous materials of a zeolitic nature, consisting of silicon and boron oxides, are prepared by reacting, under hydrothermal conditions, a silicon derivative, a boron derivative a mixture of tetramethylammonium and tetrabutylammonium hydroxides or, as an alternative, a mixed quaternary base of (methyl-butyl) ammonium hydroxide, optionally with an alkali metal hydroxide or ammonium hydroxide being present. The materials have the empirical formula: a R2O.(1-a)Me2O.B2O3.xSiO2 wherein a is from 0 to 1, x is from 30 to 120, Me is a H<+> cation, an NH<+>4 cation or an alkali metal cation, and R is (i) a mixture of a tetramethylammonium cation and tetrabutylammonium cation, and/or (ii) a quaternary (methyl-butyl) ammonium cation. |
