Selective chromatographic process using an ion-exchanged, dehydrated
chabazite adsorbent
    3.
    发明授权
    Selective chromatographic process using an ion-exchanged, dehydrated chabazite adsorbent 失效
    使用离子交换的脱水菱沸石吸附剂进行选择性色谱法

    公开(公告)号:US4747854A

    公开(公告)日:1988-05-31

    申请号:US66789

    申请日:1987-06-25

    IPC分类号: B01J20/18 B01D53/04

    CPC分类号: B01J20/186 Y10S95/902

    摘要: The present invention relates to a process for the selective adsorption and separation of one or more constituents from a gas stream in a gas chromatograph, wherein the gas stream is contacted with a dehydrated chabazite adsorbent having a residual water content of less than 1.5 wt % and having at least 50% of any exchangeable ion capacity exchanged with a polyvalent metal cation. The process of the present invention both anticipates separation of the constituents due to either a difference in the heats of adsorption of the constituents or a size exclusion effect.

    摘要翻译: 本发明涉及在气相色谱仪中从气流中选择性吸附和分离一种或多种成分的方法,其中气流与残留含水量小于1.5重量%的脱水菱沸石吸附剂接触, 具有与多价金属阳离子交换的任何可交换离子容量的至少50%。 本发明的方法既预期由于组分的吸附热差异或尺寸排阻效应导致组分的分离。

    Polyvalent ion exchanged adsorbent for air separation
    5.
    发明授权
    Polyvalent ion exchanged adsorbent for air separation 失效
    用于空气分离的多价离子交换吸附剂

    公开(公告)号:US4481018A

    公开(公告)日:1984-11-06

    申请号:US441822

    申请日:1982-11-15

    摘要: The invention relates to faujasite-containing compositions in which the original hydrogen or monovalent forms are ion exchanged to their polyvalent form and then thermally activated to promote dehydration and dehydroxylation of the faujasite while maintaining substantially the same zeolite content. The resulting compositions containing faujasites substantially in their dehydrated/dehydroxylated state have been found to have surprisingly high selectivities and capacities for the separation of air into nitrogen and oxygen.

    摘要翻译: 本发明涉及含有八面沸石的组合物,其中原始氢或一价形式被离子交换为其多价形式,然后热活化以促进八面沸石的脱水和脱羟基化,同时保持基本相同的沸石含量。 已经发现得到的含有基本上脱水/脱羟基化状态的八面沸石的组合物具有惊人的高选择性和将空气分离成氮和氧的能力。

    Nitrogen adsorption process
    6.
    发明授权
    Nitrogen adsorption process 失效
    氮吸附过程

    公开(公告)号:US4544378A

    公开(公告)日:1985-10-01

    申请号:US614086

    申请日:1984-05-24

    摘要: The invention relates to a process for adsorption of nitrogen from nitrogen-containing gases using faujasite-containing compositions in which the original hydrogen or monovalent forms are ion exchanged to their polyvalent form and then dehydrated in such a manner as to result in a preponderence of its polyvalent ions in a dehydrated/dehydroxylated state while maintaining substantially the same zeolite content. The resulting compositions, whose cations contained in the faujasitic portion are substantially in their dehydrated/dehydroxylated state, have been found to have surprisingly high selectivities and capacities for the separation of air into nitrogen and oxygen.

    摘要翻译: 本发明涉及一种使用含有八面沸石的组合物从含氮气体中吸附氮的方法,其中原始氢或一价形式离子交换成其多价形式,然后脱水,从而导致其 多价离子处于脱水/脱羟基状态,同时保持基本相同的沸石含量。 已经发现所得到的组合物,其阳离子基本上处于脱水/脱羟基状态,具有令人惊奇的高选择性和将空气分离成氮和氧的能力。