Adsorptive use of crystalline metallophosphate compositions
    37.
    发明授权
    Adsorptive use of crystalline metallophosphate compositions 失效
    吸附性使用结晶金属磷酸盐组合物

    公开(公告)号:US4385994A

    公开(公告)日:1983-05-31

    申请号:US315055

    申请日:1981-10-26

    摘要: A novel family of crystalline, microporous aluminophosphate compositions is synthesized by hydrothermal crystallization at elevated temperatures of aluminophosphate gels containing a molecular structure forming template. The family comprises a number of distinct species, each with a unique crystal structure. Calcination removes volatile extraneous matter from the intracrystalline void space and yields microporous crystalline adsorbents with uniform pores, the dimensions of which vary, among the individual species, from about 3A to 10A diameter. The compositions represent a new class of adsorbents of the molecular sieve type, and also exhibit properties somewhat analogous to zeolitic molecular sieves which render them useful as catalysts or catalyst bases in chemical reactions such as hydrocarbon conversions.

    摘要翻译: 通过在含有分子结构形成模板的磷酸铝凝胶的高温下通过水热结晶合成了一系列结晶的微孔磷酸铝组合物。 家庭包括许多不同的物种,每个都有独特的晶体结构。 煅烧从晶体间隙空间中除去挥发性的外来物质,并产生具有均匀孔的微孔结晶吸附剂,其尺寸在单个物种之间变化,从约3A至10A直径。 该组合物代表了一类新型的分子筛型吸附剂,并且还表现出与沸石分子筛有些类似的特性,使得它们可用作化学反应如烃转化中的催化剂或催化剂。

    Process for preparing molecular sieves via continuous addition of nutrients
    38.
    发明授权
    Process for preparing molecular sieves via continuous addition of nutrients 有权
    通过连续添加营养素制备分子筛的方法

    公开(公告)号:US07112316B1

    公开(公告)日:2006-09-26

    申请号:US11199044

    申请日:2005-08-08

    IPC分类号: C01B39/02 C01B37/08

    摘要: A process for synthesizing a variety of molecular sieves has been developed. The process involves forming a reaction mixture comprising reactive sources of the framework elements plus at least one templating agent, reacting the mixture to at least partially crystallize the molecular sieve and provide a slurry of seed crystals and adding to it nutrients (sources) of the framework elements, e.g. aluminum and silicon in order to grow the seed crystals. The rate of addition of the nutrients is controlled such that it is substantially the same as the crystal growth rate and such that there is substantially no nucleation of new crystals. The seed crystals may be the same or different than the nutrients being added, thus allowing for a layered molecular sieve. When the crystals have reached a desired size, they are isolated by conventional techniques.

    摘要翻译: 已经开发了合成各种分子筛的方法。 该方法包括形成包含框架元件的反应性源加上至少一种模板剂的反应混合物,使混合物反应至少部分地使分子筛结晶并提供晶种的浆料并向其中添加骨架的营养物(来源) 元素,例如 铝和硅,以生长晶种。 控制营养素的添加速度,使其与晶体生长速度基本相同,并且基本上不存在新晶体的成核。 晶种可以与添加的营养物相同或不同,从而允许层状分子筛。 当晶体达到所需尺寸时,它们通过常规技术分离。