Methods for making molecular sieves
    1.
    发明授权
    Methods for making molecular sieves 有权
    制作分子筛的方法

    公开(公告)号:US06632415B2

    公开(公告)日:2003-10-14

    申请号:US09828139

    申请日:2001-04-09

    IPC分类号: C01B3704

    摘要: An in-extrudate reaction mixture to be effectively crystallized is effectively crystallized to produce zeolitic or non-zeolitic molecular sieves. The reaction mixture is heated within a slowly rotating, double-walled reactor vessel wherein a heated medium is conducted within a space formed between the double walls of the vessel. Thus, the reaction mixture is contacted by a uniformly heated wall while being gently tumbled at low speed. The tumbling action serves to uniformly distribute the heat within the reaction mixture without subjecting the mixture to such shearing that could damage shaped particles. A relatively high quantity of reaction mixture can be handled in that way to maximize the production volumes and reduce production costs.

    摘要翻译: 有效结晶的挤出物反应混合物有效结晶,生成沸石或非沸石分子筛。 将反应混合物在缓慢旋转的双壁反应器容器中加热,其中加热的介质在容器的双壁之间形成的空间内进行。 因此,反应混合物被均匀加热的壁接触,同时以低速轻轻翻滚。 翻滚动作用于在反应混合物内均匀分布热量,而不会使混合物受到可能损坏成形颗粒的剪切。 可以以这种方式处理相对较高量的反应混合物,以最大限度地提高生产量并降低生产成本

    Synthesis of molecular sieves of CHA framework type
    3.
    发明授权
    Synthesis of molecular sieves of CHA framework type 失效
    CHA骨架类型分子筛的合成

    公开(公告)号:US06835363B1

    公开(公告)日:2004-12-28

    申请号:US10635173

    申请日:2003-08-06

    IPC分类号: C01B3704

    摘要: The invention is directed to a method of synthesizing aluminophosphate and silicoaluminophosphate molecular sieves and in particular to the synthesis of aluminophosphate and silicoaluminophosphate molecular sieves using the synthesis templates that contain two dimethylamino moieties in combination with hydrogen fluoride. The use of this template in combination with hydrogen fluoride results in good quality SAPO molecular sieves of CHA framework type with low levels of silicon that are produced in relatively short crystallization times.

    摘要翻译: 本发明涉及一种合成磷酸铝和硅铝磷酸盐分子筛的方法,特别是使用含有两个二甲基氨基部分与氟化氢组合的合成模板来合成磷酸铝和硅铝磷酸盐分子筛。 该模板与氟化氢的组合使用了质量良好的CHA骨架类型的SAPO分子筛,其具有在较短结晶时间内产生的低水平硅。

    Process for synthesizing and controlling the particle size and particle size distribution of a molecular sieve
    4.
    发明授权
    Process for synthesizing and controlling the particle size and particle size distribution of a molecular sieve 有权
    用于合成和控制分子筛的粒度和粒度分布的方法

    公开(公告)号:US06656447B1

    公开(公告)日:2003-12-02

    申请号:US09894183

    申请日:2001-06-28

    IPC分类号: C01B3704

    摘要: Applicants have developed a continuous process for synthesizing various molecular sieves. The process enables one to control both the particle size and particle size distribution. Any of the molecular sieves represented by the empirical formula on an anhydrous basis: rR2O:(SixAlyPz)O2, where R is at least one structure directing agent, “r”, “x”, “y” and “z” are the mole fractions of R, Si, Al and P respectively, can be prepared using this process. The process involves continuously adding separate streams comprising reactive sources of at least each framework element into a continuous crystallization reactor. Either interstage backmixing is introduced or the number of stages is adjusted in order to control particle size.

    摘要翻译: 申请人已经开发了用于合成各种分子筛的连续方法。 该方法使得能够控制粒度和粒度分布。 任何以无水为基础的经验式表示的分子筛:rR2O:(SixAlyPz)O2,其中R是至少一种结构导向剂,“r”,“x”,“y”和“z” 可以使用该方法制备R,Si,Al和P的分数。 该方法包括将包含至少每个骨架元件的反应性源的分开的流连续添加到连续结晶反应器中。 引入阶段间混合或调整阶段数以便控制粒度。

    Method for making molecular sieves and novel molecular sieve compositions
    5.
    发明授权
    Method for making molecular sieves and novel molecular sieve compositions 有权
    制备分子筛和新型分子筛组合物的方法

    公开(公告)号:US06350429B1

    公开(公告)日:2002-02-26

    申请号:US09465029

    申请日:1999-12-16

    IPC分类号: C01B3704

    摘要: This invention relates to the synthesis of large pore composite molecular sieves and to the synthetic large pore composite molecular sieves so produced. The molecular sieves of the invention have the same general utilities of the comparable molecular sieves of the prior art but have been found to be superior catalysts and absorbents. This invention relates to a hydrothermal synthesis of large pore molecular sieves from nutrients, at least one of which contains an amorphous framework-structure, and which framework-structure is essentially retained in the synthetic molecular sieve. This invention stems from a discovery that the intrinsic porosity characteristics of a nutrient that possesses an amorphous cation oxide-framework can be substantially retained in the final molecular sieve containing product formed by a hydrothermal process by carefully controlling the conditions under which the hydrothermal process is conducted. For example, the invention contemplates retention of the particle size in a final molecular sieve-containing product that corresponds with that of an amorphous cation oxide-framework nutrient used in its manufacture. This invention drives the selection of process conditions to achieve one or more of macro and meso porosity (“large pore composite porosity”) in the final molecular sieve product as a direct product of the hydrothermal reaction producing the molecular sieve. The invention allows the production of a molecular sieve that is in situ incorporated in the framework morphology of a solid cation oxide-framework used in the molecular sieve's manufacture.

    摘要翻译: 本发明涉及大孔复合分子筛的合成以及如此生产的合成大孔复合分子筛。 本发明的分子筛具有与现有技术相当的分子筛相同的通用效用,但已被发现是优异的催化剂和吸收剂。 本发明涉及从营养物质中大量分子筛的水热合成,其中至少一种含有无定形骨架结构,其中骨架结构基本上保留在合成分子筛中。 本发明源自一个发现,即通过仔细控制进行水热处理的条件,具有无定形阳离子氧化物 - 框架的营养物质的固有孔隙特性可以基本上保留在通过水热法形成的含最终分子筛的产品中 。 例如,本发明考虑到在与其制造中使用的无定形阳离子氧化物 - 骨架营养物相当的最终的含分子筛的产品中保留粒度。 本发明驱动工艺条件的选择,以实现最终分子筛产物中作为产生分子筛的水热反应的直接产物的宏观和中孔多孔性(“大孔复合孔隙率”)中的一种或多种。 本发明允许生产分子筛,其原位掺入分子筛制造中使用的固体阳离子氧化物框架的骨架形态。