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    • 6. 发明授权
    • Method for the separation of zeolites
    • 沸石分离方法
    • US06924247B2
    • 2005-08-02
    • US10014853
    • 2001-12-14
    • Angela CaratiGiannino PazzuconiCarlo PeregoOscar CappellazzoGianni Girotti
    • Angela CaratiGiannino PazzuconiCarlo PeregoOscar CappellazzoGianni Girotti
    • B01J20/18B01J20/30B01J29/70C01B39/02B01J29/06
    • B01J29/06B01J29/7007B01J29/7034C01B39/026
    • The object of the present invention relates to a simple, rapid and inexpensive process for effecting solid-liquid separations in the case of zeolites, also having small crystals. This process, which is particularly useful for the recovery of zeolite crystals in suspension in the crystallization water, comprises treating this suspension of crystals with an acid or one of its precursors and subjecting the resulting mixture to filtration or decanting.According to a particular aspect of the invention, the crystalline phase is separated in a mixture with oxides which can be used as ligands. Said oxides can be generated by the reagents of the zeolite preparation reagent mixture, not transformed into crystalline phase during the synthesis hydrothermal treatment, or they can be added to the suspension of crystals before the separation treatment, or again they can be generated by precursors suitably added to the crystallization slurry.
    • 本发明的目的涉及在具有小晶体的沸石的情况下实现固液分离的简单,快速和便宜的方法。 对于在结晶水中悬浮的沸石晶体的回收特别有用的该方法包括用酸或其前体之一处理该晶体悬浮液,并将所得混合物过滤或倾析。 根据本发明的特定方面,结晶相与可用作配体的氧化物以混合物分离。 所述氧化物可以通过沸石制备试剂混合物的试剂产生,在合成水热处理期间不转化为结晶相,或者可以在分离处理之前加入到晶体悬浮液中,或者再次由前体合成生成 加入到结晶浆料中。