Adsorbent compound for use in insulated glass windows
    1.
    发明授权
    Adsorbent compound for use in insulated glass windows 有权
    用于绝缘玻璃窗的吸附剂

    公开(公告)号:US06387160B1

    公开(公告)日:2002-05-14

    申请号:US09782749

    申请日:2001-02-13

    IPC分类号: B01D5302

    CPC分类号: B01D53/02 B01D2253/108

    摘要: In using partially alkali metal exchanged forms of FAU zeolite as selective adsorbents for use in insulated glass windows, particularly for use in a matrix in insulated glass windows, it has been discovered that significant reduction in the nitrogen loading on the zeolite results when the alkali metal content is maintained at a low level. For example, such FAU zeolites, particularly zeolite X which has been ion-exchanged with potassium ions to a level of between about 5 and about 75 equivalent mole percent indicate a nitrogen adsorption loading of between about 400 and 600 percent lower than unexchanged zeolite X and about 200 percent less than fully potassium exchanged zeolite X. The adsorbent is particularly useful in a sealant matrix for insulated glass windows and may be used in combination with zeolite A to reduce out-gassing problems.

    摘要翻译: 在使用部分碱金属交换形式的FAU沸石作为选择性吸附剂用于隔热玻璃窗,特别是用于隔热玻璃窗的基质中时,已经发现,当碱金属 内容维持在较低水平。 例如,这种FAU沸石,特别是已经与钾离子离子交换的沸石X达到约5至约75当量摩尔百分比的水平表明氮吸附负载比未改变的沸石X低约400和600% 比完全钾交换的沸石X少约200%。吸附剂特别可用于隔热玻璃窗的密封剂基质,并且可以与沸石A组合使用以减少排气问题。

    Process for preparing low silica forms of zeolites having the faujasite
type structure
    5.
    发明授权
    Process for preparing low silica forms of zeolites having the faujasite type structure 失效
    制备具有八面沸石型结构的低二氧化硅形式的沸石的方法

    公开(公告)号:US5366720A

    公开(公告)日:1994-11-22

    申请号:US171801

    申请日:1993-12-23

    IPC分类号: B01J29/08 C01B39/02 C01B33/34

    摘要: Low silica forms of faujasite-type zeolites are prepared from more siliceous forms of the same zeolite species by contacting the starting zeolite with a highly caustic concentrated sodium aluminate solution at elevated temperatures. In view of the fact that the process does not favor the formation of undesirable impurity phases such as zeolite A and thus does not require the presence of zeolite A nucleation inhibitors, the process is particularly advantageous in the production of forms of zeolite X having Si/Al.sub.2 molar ratios below 2.5.

    摘要翻译: 通过在高温下使起始沸石与高碱苛性铝酸钠溶液接触,由更多的硅质形式的相同沸石物质制备八面沸石型沸石的低二氧化硅形式。 鉴于该方法不利于形成不需要的杂质相如沸石A,因此不需要存在沸石A成核抑制剂,该方法特别有利于生产具有Si / Al2摩尔比低于2.5。