Method for making silica shaped bodies
    3.
    发明授权
    Method for making silica shaped bodies 有权
    制作二氧化硅体的方法

    公开(公告)号:US08207082B2

    公开(公告)日:2012-06-26

    申请号:US12087981

    申请日:2007-01-12

    IPC分类号: B01J21/08 B01J31/06

    摘要: This invention relates to a method for making shaped bodies having a silica content of at least 85 wt %, to shaped bodies made by such method, to catalyst compositions comprising shaped bodies made by such methods and to catalytic conversion processes using catalyst compositions comprising shaped bodies made by such methods. The method of making the shaped bodies comprises the steps of a) forming shaped bodies from a mixture obtained from at least one amorphous silica powder, at least one silica sol having a pH below 7, and at least one polymeric organic extrusion aid, optionally supplemental liquid medium and optionally crystallites of a zeolite or zeolite-type material; b) drying the shaped bodies obtained in step a); and c) heating the shaped bodies to a temperature ranging from about 500° C. to about 800° C.

    摘要翻译: 本发明涉及一种制备具有至少85重量%的二氧化硅含量的成型体,通过这种方法制成的成形体,包括由这种方法制成的成型体的催化剂组合物,以及使用包含成形体的催化剂组合物的催化转化方法 通过这种方法制成。 制造成形体的方法包括以下步骤:a)从由至少一种无定形二氧化硅粉末,至少一种pH值低于7的硅溶胶和至少一种聚合有机挤出助剂获得的混合物形成成型体,任选地补充 液体介质和任选的沸石或沸石型材料的微晶; b)干燥步骤a)中获得的成形体; 和c)将成形体加热至约500℃至约800℃的温度。

    Enhanced crystal acidity exchange method
    6.
    发明授权
    Enhanced crystal acidity exchange method 失效
    增强晶体酸度交换方法

    公开(公告)号:US07553790B2

    公开(公告)日:2009-06-30

    申请号:US11258440

    申请日:2005-10-25

    IPC分类号: B01J29/06

    CPC分类号: B01J29/40 B01J2229/42

    摘要: The present invention describes a method to increase the activity of a catalyst by first performing an ion exchange step with a potassium ion, followed by performing an ion-exchange step with an ammonium ion. Specifically, the present invention describes a method to increase the acidity of a zeolite by incorporating a potassium salt ion-exchange prior to an ammonium salt ion-exchange step. Even more specifically, the present invention is drawn to a method of increasing the activity of a zeolite by employing more than one potassium ion exchanges followed by at least one ammonium ion exchange. The present invention also describes a method to reduce the amount of sodium normally found in commercially produced zeolite by employing any of these methods. The present invention is also drawn to the catalysts produced by any of these methods.

    摘要翻译: 本发明描述了通过首先用钾离子进行离子交换步骤,然后用铵离子进行离子交换步骤来提高催化剂活性的方法。 具体地,本发明描述了通过在铵盐离子交换步骤之前引入钾盐离子交换来提高沸石的酸度的方法。 更具体地说,本发明涉及通过使用多于一种的钾离子交换,然后进行至少一种铵离子交换来提高沸石的活性的方法。 本发明还描述了一种通过使用任何这些方法来减少通常在商业生产的沸石中发现的钠的量的方法。 本发明还涉及通过任何这些方法制备的催化剂。