| 摘要 |
The present invention relates to a composition and a method for preparing ZSM-48 exhibiting an X-ray pattern having values as set forth in Table 1 of the specification. The method of the present invention includes (a) preparing a reaction mixture; and (b) maintaining the mixture under crystallization conditions until crystals of the ZSM-48 are formed. The mixture includes a source of silica, a source of trivalent metal oxide, an alkali metal oxide, ethylenediamine and water. The mixture, in terms of mole ratios of oxides, has the following composition ranges: SiO2/Me2O3: 100 to 1500, M2/nO/SiO2: 0 to 0.2, RN/SiO2: 2.0 to 5.0, OH-/SiO2: 0 to 0.3, and H2O/SiO2: 10 to 100, wherein Me is a trivalent metal, M is an alkali metal and RN is ethylenediamine. |
