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发明公开
CN109694083A DDR沸石分子筛的制备方法 有权

DDR沸石分子筛的制备方法
摘要：
本发明涉及一种DDR沸石分子筛的合成方法，主要解决现有技术存在合成DDR沸石分子筛所用有机模板价格昂贵以及DDR分子筛晶体尺寸过大的问题。本发明通过使用可从市售获取的二甲基二异丙基铵DMDIPA+作模板剂，按照DMDIPA+:YO2:M2O:X2O3:H2O＝0.05～1.0:1:0～0.75:0～0.1:1～100的组成，将混合物在90～220℃温度下水热晶化8～350小时，其中Y为至少一种骨架四价元素、X为至少一种骨架三价元素、M为碱金属元素的方法得到多孔结晶DDR沸石分子筛材料。本发明使用的模板剂成本较低，合成得到的DDR沸石分子筛晶粒尺寸小。本发明操作简单，合成范围广，便于进行推广。
摘要（英）：

The invention relates to a DDR zeolite molecular sieve synthesis method. In the prior art, the organic template for DDR zeolite molecular sieve synthesis is expensive and the crystal size of the DDR molecular sieve is too large. A purpose f the present invention is mainly to solve the problems in the prior art. According to the technical scheme, commercially available dimethyldiisopropylamine DMDIPA<+> is used as a templating agent, and a mixture is subjected to hydrothermal crystallization for 8-350 h at a temperature of 90-220 DEG C according to a ratio of DMDIPA<+> to YO2 to M2O to X2O3 toH2O of 0.05-1.0:1:0-0.75:0-0.1:1-100 to obtain a porous crystallized DDR zeolite molecular sieve material, wherein Y is at least a skeleton tetravalent element, X is at least a skeleton trivalent element, and M is an alkali metal element. According to the present invention, the cost of the used templating agent is low, the synthesized DDR zeolite molecular sieve has a small crystal grain size, andthe method has characteristics of simple operation, wide synthesis range and convenient promotion.

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