초록

A new and useful method for preparing synthetic zeolite ZSM-39 is provided. This new method comprises synthesizing zeolite ZSM-39 in the presence of pyrrolidine as a template rather than the template of a tetraethylammonium cation or n-propylamine.

대표청구항 ▼

A method for synthesizing crystalline zeolite ZSM-39 which has the composition expressed in terms of mole ratios of oxides in the anhydrous state as follows: (0-2.5)M2/nO: (0-2.5)Al2O3: 100 SiO2 wherein M is at least one cation having a valence n, said zeolite being characterized by the X-ray diffra

A method for synthesizing crystalline zeolite ZSM-39 which has the composition expressed in terms of mole ratios of oxides in the anhydrous state as follows: (0-2.5)M2/nO: (0-2.5)Al2O3: 100 SiO2 wherein M is at least one cation having a valence n, said zeolite being characterized by the X-ray diffraction pattern as set out in Table I herein, which comprises the steps of a. preparing a reaction mixture comprising sources of alkali metal oxide, an oxide of silicon, water, pyrrolidine, and a tetraureacobalt (II) complex and having a composition, in terms of mole ratios of oxides, falling within the following ranges: SiO2/Al2O3=5-infinity H2O/SiO2=1-3000 OH-/SiO2=0.001-10 M/SiO2=0.01-3 R/SiO2=0.01-5 R′/SiO2=0.005-2 wherein M is an alkali or alkaline earth metal cation, R is pyrrolidine and R′is a tetraureacobalt (II) cation, and b. maintaining said mixture at a temperature of from between about 25°C. and about 250°C. until crystals of said zeolite are formed.