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    • 8. 发明授权
    • Synthesis of chabazite-containing molecular sieves and their use in the conversion of oxygenates to olefins
    • 含有菱沸石的分子筛的合成及其在含氧化合物转化为烯烃的用途
    • US07754187B2
    • 2010-07-13
    • US11820908
    • 2007-06-21
    • Guang CaoMachteld M. MertensAnil S. GuramHailian LiJeffrey C. Yoder
    • Guang CaoMachteld M. MertensAnil S. GuramHailian LiJeffrey C. Yoder
    • C01B37/02C01B39/04
    • C01B39/48B01J29/70B01J29/80C01B39/023C07C1/20Y02P30/42C07C11/02
    • A method is disclosed of synthesizing a crystalline material comprising a CHA framework type molecular sieve and having a composition involving the molar relationship: (n)X2O3:YO2, wherein X is a trivalent element; Y is a tetravalent element; and n is from 0 to less than 0.01. The method comprises preparing a reaction mixture capable of forming said material, said mixture comprising a source of water, a source of an oxide of a tetravalent element Y and optionally a source of an oxide of a trivalent element X, wherein the reaction mixture is substantially free of fluoride ions added as HF; maintaining the reaction mixture under conditions sufficient to form crystals of the crystalline material; and than recovering the crystalline material. The reaction mixture comprises either a specific directing agent for directing the formation of a CHA framework type molecular sieve and/or a H2O:YO2 molar ratio of greater than 20. In one embodiment, the resultant crystalline material is free of stacking faults and/or any intergrown phase with an AEI framework type molecular sieve.
    • 公开了一种合成包含CHA骨架型分子筛并具有摩尔关系的组成的结晶材料的方法:(n)X 2 O 3:YO 2,其中X是三价元素; Y是四价元素; 并且n为0至小于0.01。 该方法包括制备能够形成所述材料的反应混合物,所述混合物包含水源,四价元素Y的氧化物源和任选的三价元素X的氧化物源,其中反应混合物基本上 不含氟离子作为HF添加; 在足以形成结晶材料晶体的条件下保持反应混合物; 而不是回收结晶材料。 反应混合物包括用于引导形成CHA骨架型分子筛和/或H 2 O:YO 2摩尔比大于20的特定导向剂。在一个实施方案中,所得结晶材料不含堆垛层错和/或 任何与AEI框架型分子筛的共生相。